Accounts and no delivery to keep query open

Telkom p[romised me a credit for my ADSL in Norwood as the connectivity was so appauling. They will not cancel my service and keep my query open. I agreed to have a landline at my new address in Sydenham as there is no port for ADSL, I have waited at home for 3 separate days waiting and in over a month Telkom has still not installed my landline but has debited R500 in September and will no doubt take another R500 for October.They have now said the 12th of October for installation. The credit they promised was R1000. They will have taken R1000 for no service by the time my phone is installed if ever. I am hating dealing with Telkom. They pass the buck. Their calls cannot be recorded by my Call record on my cellphone. They send no documentation and do not sort out queries. There is no one to call to see where technicians are.