Telkom took my money

I bought a WiFi in September and my monthly installment was 139 for 15 Gg in December i received a msg saying that if i don't pay R784.81 my wifi will be disconnected i was puzzled to to hear that, then i called them spoke to Ntokozo Tshabalala he said i need to pay that amount before they lock my account then i asked them why it was not deducted on my account they said i had insufficient funds *shook* how come and they were penalties as well on this account Tshabala asked me open questions about my Account then i notice he is calling out the wrong account number i stop him then i said that is not my account number my account number is****** then i ask him to spell out that account number for me *** it was on friday @12:16pm then i ask him who's fault is it now coz i submitted my Bank Statement that has my account number on top why must i suffer because one of your Agents put a wrong number on my account he said to avoid the disconnection i must pay R784.81 at Shoprite using this number *** and he will forward my query to Bulling department my case number is ***2 iv been calling and calling nothing has been worse they deducted my money in Jan with out telling me and date was not the one we agreed on every time i call them they always said billing Department will call you back till today i never receive any feedback from them