- Before disputing anything, ask the collector or creditor to put the debt's details in writing: the original creditor, the account number, the amount claimed, and how that amount was…
- - [ ] Do you recognize the original account this debt is supposedly based on?
- Send a written dispute setting out specifically why you say the debt is wrong — not owed, already paid, or inaccurately calculated — along with copies of your supporting records.
Being pursued for a debt that simply isn't yours — because it was already paid, the amount is wrong, or it never belonged to you in the first place — is more common than most people expect, and more frustrating to fix than it should be. Collection errors happen: records get mismatched, old balances get miscalculated, accounts get resold with outdated information attached.
Disputing a debt you don't owe in Ontario is not just a matter of telling the collector "that's wrong" over the phone and hoping it goes away. It usually takes a deliberate, documented process, especially once the matter has escalated toward — or into — a lawsuit.
This guide walks through how to build and raise that dispute properly.
Step 1 — Get the Details in Writing
Before disputing anything, ask the collector or creditor to put the debt's details in writing: the original creditor, the account number, the amount claimed, and how that amount was calculated. A vague verbal claim is hard to dispute effectively; a written breakdown gives you something concrete to check against your own records.
Step 2 — Compare Against Your Own Records
- [ ] Do you recognize the original account this debt is supposedly based on?
- [ ] Do your own records show this debt was already paid, in full or in part?
- [ ] Does the amount claimed match what you believe was actually owed?
- [ ] Could this be confused with a different account, a different person, or an already-settled dispute?
Keep copies of anything that supports your position: payment confirmations, bank statements, prior correspondence, settlement letters.
Step 3 — Dispute in Writing, Clearly and Promptly
Send a written dispute setting out specifically why you say the debt is wrong — not owed, already paid, or inaccurately calculated — along with copies of your supporting records. A clear, prompt, documented dispute is far more useful later than a vague objection made only once, informally, and never followed up.
Step 4 — Don't Let a Dispute Distract You From a Court Deadline
If the dispute escalates into an actual lawsuit, disputing the debt with the collector directly is not a substitute for responding to the claim itself within your court deadline. These are two different tracks: informal dispute and formal legal response. If you are served with a claim, that deadline governs, regardless of where an informal dispute stands.
Turning a Dispute Into a Formal Legal Defence
| If you're not yet sued | If you've been served with a claim |
|---|---|
| Send a written dispute with supporting records; keep a paper trail | File a formal defence within your deadline, raising the same dispute |
| Follow up if you don't get a substantive response | Attach or reference your supporting documents in your response |
| Consider getting advice if the debt is significant or the collector won't engage | Don't wait for the dispute to be "resolved" informally before responding |
What If the Collector Won't Budge?
Sometimes a collector maintains its position even against solid contrary evidence. At that point, your options generally include continuing to formally dispute it, waiting to see whether the matter proceeds to a lawsuit (where you can raise the dispute as a defence), or getting a lawyer involved to press the point directly with the collector or the underlying creditor.
Common Reasons a Debt Turns Out to Be Wrong
- A payment was made but never properly recorded or applied to the account
- The debt was resold to a new collector with outdated or incomplete records attached
- Interest, fees, or charges were added incorrectly, or without proper authority
- The account actually belongs to a different person, sometimes due to a shared or similar name
- The debt is genuinely old enough that it may be outside its limitation period, separate from whether it was ever accurately calculated
Frequently asked questions
Does disputing a debt stop collection calls?
Not automatically, though a clear written dispute with supporting evidence can sometimes prompt a collector to pause while it investigates. If contact becomes unreasonable or abusive regardless, that raises separate concerns worth documenting.
What if I already paid the debt but lost the receipt?
Look for alternative proof: bank or credit card statements, email confirmations, or correspondence referencing the payment. A missing receipt is not fatal to a dispute if other records can establish the payment happened.
Can I be sued over a debt I've already formally disputed?
Yes — disputing a debt with a collector does not legally prevent a lawsuit from being filed. If you are served, you still need to file a formal defence within your deadline, using the same evidence that supported your earlier dispute.
What if the debt belongs to someone with a similar name to mine?
That is a recognized problem, sometimes described as mistaken identity, and it needs to be raised directly and specifically — both with the collector and, if it comes to it, in a formal defence — rather than assumed to sort itself out.
This is a litigation question
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