Poor and frustrated service

I have upgraded my telkom contract ,two days my sim card stopped working i phoned Telkom, they transferred me from one person to another and at the end refuse to assist me,they said i must contact Mondo and Mondo advised they didnt do the upgrade it was telkom,i am tired telkom debit my account but when you have issues they refer you to third party,i need this to be resolved or they must cancel the contract and give me back my money they debited