Bad service or lack of

I have been busy this problem with web Africa for over a month now where they blame Telkom and Telkom comes out and checks everything and replaces everything but still disconnections. but they still say its Telkom. so I get told by web Africa to get a new router. as the problem is my router. so I get a new router R500 later still the same problem. so they tell me over the phone I wont be charged for the dsl line until it is fixed but guess what I get charged. then Telkom said lets try a Telkom guest account and guess what happened the service was stable so it means web Africa is at fault. so web Africa says I must try a test account from them. but now I look I have to pay for that as well. but this account disconnects even worse than the normal account. if an isp cannot even fix a disconnection problem maybe they should take up knitting other than have a web service.