Awful service

I requested for Telkom to install an ADSL line about 3 weeks back.. I have not received any communication from then whatsoever since then. On the 14th of September I received an invoice that I should pay R210.71 and on the 16th I also received another statement stating I should pay R336.21. Every time I call to enquire, I am told that their are offline. I called in today to speak to a manager and the consultant dropped my call. I would like to cancel my services with them because if this is happening now then that is not good customer service like they advertise. Awful service.