Telkom's Inefficiency in providing service

I app**** for a Telkom telephone line and adsl line to be installed on 30 March 2015. The installation booking moved swiftly until the technician doing the installation told me that he was instructed to ONLY install a telephone line and not adsl. I just need to order the ADSL line via their call centre and they'll activate it telephonically. It's now been just about three weeks and still no line. I have contacted the call centre every single day, and every call centre agent has given me a different explanation as to why they cannot install or activate the adsl line ranging from infrastructure issues to the unprotected strike. Yet, I have been sent an invoice in the mean time to pay my Telkom bill in full for the services supp**** by them. WHAT SERVICE??! I still have no internet and no idea of who to speak to next and the last person said that a technician will be in touch shortly. That was 5 days ago!