Vodacom useless ********* ******

I had a contract with Vodacom and after the completion of my 24 month contract I called in and cancelled it in January 2020. Since then every month Vodacom has chosen to keep deducting money meaning I have to go into the bank causing travelling and bank reversing costs. I am going to open a case against Vosacom as they are intentionally *****ing my money this after I had cancelled my contract. This is not new practice for a company known for overcharging for data usage they cannot explain or data disappearing. No ethics but no surprise