Telkom ingnores cancellation request - Should start a combined legal action, this in ********l !

Having done all the requirements according to their system, they just don't react. This is probably the only way they can keep customers. I have sent the form with ID, waited 21 days. And nothing. Called the service line after 18 days to check up, waited 20 minutes, just to be informed that they can't see anything on their system until the 21 days had passed. Called again after the 22 days, and hang on to the line for more then 30 minutes and gave up. Have tried the stores, they only do cellphones or sales ! Is there perhaps only a single person handling cancellations ? This can't be accepted. We have moved out of an apartment, and the new tenant will have a free line and dsl. Who is going to pay for this? Have there been court cases against Telkom for this lacking service ? Otherwise any lawyers interested in sorting this kind of practice out.