Telkom Over charging

I was debited for my cellphone contract on the 20th of October after having made a manual payment on the 5th. I spoke to a lady by the name of Mapule Mangqalaza on the 21st of October who informed me that the matter would be resolved. I received the same debit order again on the 31st of October which was not meant to go off. I was informed that they may be a miscommunication between collections and accounts, however payments usually reflect after 24/48 hours. From the 20th until the 31st of October is well over a week,so why am I still being debited!? Telkom is by far the worst cellphone company to ever take up a contract with. I’ve been sending emails with my bank statement to show that they’re overcharging me when they shouldn’t be and I’m not getting g any assistance. I wouldn’t recommend taking a contract with Telkom to my worst enemy