How do I stop my direct debit

[Neil56]

My contract has run out and I need to cancel my direct debit. I have moved to a cheaper company 

[MI5 · Accepted solution]

@Neil56 

You need to cancel your contract with O2.

Guide: Cancelling Your Contract 

Once cancelled, O2 will stop calling the direct debit and you can cancel it with your bank, but only after your final bill has been paid.

[Enlli]

Just remember cancelling your Direct Debit without going through O2 can end up ruining your credit file as things are passed to the debt collectors

[MI5]

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Hence why I carefully explained the steps to go through.