Bad Mtn service

I had a data only contract that is due to expire in May 2022.I asked for cancellation fees on the 28 August 2021.I sent an email, I got no response.I phoned many times and struggled to get through using my cell number.Eventually I got through by phone on the 3rd Sep 2021 and paid the cancellation on the 10 Sep2021.I called them so that they cancell and not debit my account.They continued to debit and I just continued to reverse thr amount.I am now taken to lawyers because I reversed thr amounts even though I told them numerous times to cancel the contract.