No service testing or further comms on moved line

We have just moved from Unit 11 in our complex into Unit 67. When we got home, the internet wasn't working, and still isn't. The Telkom ADSL support agent then told me that the technician who came to move our ADSL line to our new premises didn't run the right service tests to see if the connection worked and didn't bother to phone me if he noticed something was wrong. I'm now paying for a service that doesn't work. What's worse is that the ADSL support agent tells me that the exchange we are now on is terrible and that there's not much we can do about it - sounds like nonsense to me as the complex and businesses in our same street all have fine ADSL on 2Mbps lines or higher. I need to speak to one Telkom agent who can fix this problem for us without being told to phone the call centre multiple times. I'm bleeding money right now because of a service that should be working but isn't. How can we work from home without our internet?