Poor Quality ADSL

Over the last 3 months I have had issues with my internet connection. I have made numerous calls to both telkom and mweb to resolve this - although I know that the fault lies with telkom. My ADSL line has a second hop latency of 300+ ms with 100 ms jitter, poor line speed and packet loss. I was told 2 weeks ago that it was due to a fault at the exchange. The service improved for a while and telkom just closed the fault. 2 days ago the issues reoccurred. Now I am told that the issue is congestion at the exchange, conflicting with the information provided 2 weeks ago that 29 slots were available on the exchange. I am paying money for a pathetic service, My ping to a few km away is literally higher than what it should be to the usa. When I get home from working as a network engineer it would be great if I didnt have to sit diagnosing a line I pay for and sit on hold for an hour to send reports to people who dont know anything more than asking me what lights are on on my router before telling me to restart it.