No service from Telkom

Absolutely terrible service. I have an ADSL line and billed R600 per month for it yet the entire month of April I had no internet connection. I called customer service and they said that a technician would be coming as it is a cable fault. Till today no technician arrived. Almost every month I have problems with the internet connection yet I'm still billed the same amount. Weeks go by without internet access. Absolutely concerning.