Disastrous non-service from Telkom

I am a medical doctor. My practice phone number had a fault in the beginning of April. I reported the fault and marked it urgent as it is a doctors rooms. I was issued a ref no. 173CRZ050419. After two weeks nobody came to attend to the fault. I phoned Telkom and they had no idea why a technician was dispatched. They apologized and gave me a priority number ********** and promised to attend to the matter urgently. They marked the request as Priority. Two weeks later still no technician came and I rang them again and once again they apologized and now issued me with a High Priority no. ********** . It is now 10 days later and still nobody has come. I regard Telkom as a totally *********** company and I have to pay them a monthly rental without the use of my phone. My patients are now having their healthcare as they cannot reach me. I am at my wits end as I don’t know how to resolve this problem