Problems with my line rental

For the past 2 months I was Charged for a 10mb line rental. Finally when i got hold of them no one could tell me what was going on. a month later I got a message saying I should phone this person, so when i called they could not give me any indication of who requested the 10mb line rental and first as always blamed my ISP. I then phoned my ISP to ask what was going on and was told that Telkom has a new policy where it takes longer for ISP to get the customers line from telkom ( I am with the ISP for 3 Months and they still don't have it). I then asked my ISP to look when i purchased my package from them (25th of April) and phoned the person back at telkom to ask when the upgrade on my line was made(13th April) when I told them when i joined my ISP they said they will contact the wholesales department and find out what happened. the follow morning she smsed me back saying its was a Different ISP that made the upgrade. but that ISP is on a different account and it is my account being charged every month. And now when i try to phone that person again there's no answer. And when I phone the 10210 number I'm on hold for 2 hours and then the phone just goes dead.