Worst service in history

I’m am infuriated by the service I’m receiving at vodacom I cancelled my contract because of this two years thinking being on prepaid would make save me from dealing with them ,I bought data in APRIL on their useless app via Masterpass i wasn’t credited my data and requested for a cash refund I have been waiting since than for the credit I get daily senseless calls from agents telling me my matter is being processed still no money.I have never been so disappointed this is not the 1st or the 2nd time I am definitely motivated to port my number