Extremely Frustrated

I'm extremely frustrated with telkom, Trying to phone them to notify that I want to move my ADSL line. For a place that is suppose to be working with telephones etc, they sure DON'T KNOW how to answer them. Tried Calling more than 20 times and holding on for about 20-30min each time over the last few days. After this I drop the call, due to calling from my cellphone. Surely there must be an easier way that this. Online is just as slow as they will contact you after 48hrs, still waiting.