ADSL not working for over a month

My ADSL/Internet connection has not been working for a month now - a technician came eventually on Saturday - said it wasn't the line, so we called technical support while he was there and the guy got me to change various internet settings. I explained to them the problem was intermittent. Once settings were changed, I was able to connect, however as usual, later that afternoon I could no longer connect. Now I have logged another fault as the previous one was closed, but it takes forever for someone to call you back and if I try and call Telkom, I can hold on for an hour with no joy!! All they say on all their options is \WE ARE EXPERIENCING LARGE CALL VOLUMES"I am so tired of hearing that - is Telkom understaffed or are they just not answering the phones - what is going on - I am not waiting another month!! Otherwise I must get another service provider - I have had ENOUGH."""