Biggest ****mers

If there was anything less than 1 star I would give it to Vodacom customer care...I had a query with my invoice where I was billed more with no explanation, I paid the amount I was owing but my services are still suspended because of this mysterious R577 that was billed to my account. I called customer care last week and the agent confirmed that the R577 was billed in error and He supposedly logged a call which he said should be resolved by Monday the 7th of April ...its the 10th today and I have not received any feedback from vodacom and my internet continues to be suspended.Yesterday I received the April invoice and it's still reflecting the R577,what the hell am I supposed to do now???