No telkom Service

I requested a new telephone service for our medical practice during Feb 2016 and was advised that it would be installed on Thurs 10/03/2016. I arranged to have some-one waiting all day but no technician arrived. When I called Telkom they advised me that some one had been but there was no-one at the premises. This was not accurate. The technician then installed the line the following week together with an ADSL line. This was working on the day but has never worked again. We have spent more than 5 hours on the phone to Telkom to activate the line and have been passed to every department in Telkom with no resolution. Every department blames the next and not one person has assisted us. This is a medical practice and we urgently need a resolution. The reference for this installation - ***A. Despite various promises, no-one has got back to us. TElkom service is such a disappointment.