one month and no resolve

I have an FNB connect line on Talk Max. For the last month and furthermore I cannot makes calls to any Vodacom number - the automated message is that there is insufficient airtime. This matter is unresolved for a month now. I keep getting an email that they are working on it and nothing happens. The service person keeps lying to me that he will call back in 48 hours and never does --- it is now ten days since his last promise. I cannot make calls to a few numbers and FNB doesnt care but takes my money!!!!!!. Now some MTN numbers cannot be dialled. The last time the guy called ten days ago, he said it was resolved but was not at all. i informed him and he never did come back as promised!!!!!! Many calls and many hours of frustration, it still does not work. Now when you call 135, I cannot get through to the call centre. Frustrating service. Looking at going to another service provider now. Useless and a no care attitude.