Revolting billing issues

I paid off my account last month. This month (August), my debit went into “arrears” because of my cellphone insurance of R53?? Today when I call in to query I’m told that I owe over R140? Patricia also tells me that I was also charged for a lousy SMS, as well as a letter? Is the letter made from a bamboo tree?? This level of service is appalling to say the least. I have always received such terrible service when it comes to any TFG product!! You have lost another client- if you fancy terrible service, open a TFG (Markhams / Foschini) account and opt for any of their products!!