Sureswipe *****ing money from my account after I stop my contract.

Sureswipe *****ing money from my account . I had EFT machine for 3 years to running my business on November I sent a month notice to cancel my machine and collect their machine from my store . On December courier collect their machine and few days later I received the phone call from them which they confirmed they have the machine. They told me Last debit order is on 15 of December and then no more debit to my account for machine rental for R470 but I January 2022 I received another debit order again for R470 .I tried to contact them they will give me email address I sent ab email but no response from sureswipe.