Landline not repaired after 3 weeks

I have been contacting Telkom several times about my faulty landline. a Fault has been logged, but no one came out to my house to fix it. I do a lot of work from home and this problem make my work and life incredibly difficult. I have to make all calls on my cellphone which is costing me a fortune. This is really unacceptable. My husband and I are both doctors and we cant work like this. I would really appreciate it if someone could assist us. This is really terrible service.