Poor service

I am so frustrated as I run a business from home needing internet and a landline. I have not had a landline from last week Tuesday, 4 August 2015 and intermittent internet. We logged the complaint with Telkom and were given a reference number. No one came back to us. We have phoned each day since then using our cell phones at a huge expense. My daughter needs Internet as part of her university studies and she has used up her month's data as the wifi isn't working. Each time we phone, the call centre are unsympathetic and unhelpful - they all just say they'll log the complaint. We were phoned on Saturday, 8 August and told a technician would visit between 09:00 and 11:00 on the 10 August. He never pitched. When I phoned back today, 11 August I was told that a new technician had been allocated yesterday and as yet he has not called. How can anyone run a business in South Africa when we have only one landline service provider and we are held hostage to their system that seems to be ***********? I have pleaded with the call centre to give me a phone number of someone who can help me, and they refuse as they say the person in the street can only log complaints with the call centre Help