No wifi for three months

Telkom is my residential internet service provider. In April this year I started experiencing a problem with my router. I couldn't access the internet. I reported this to Telkom and was told that I was logged in as a guest. Then they rectified to error, and this only lasted for a day, thereafter we experienced to same problem again. When I made them aware of this, they said my data bundles were depleted. Then after a few days they called my son, who has been communicating with them, saying that the reason we couldn't access the internet was that they had technical error. They said that we will be able to surf the net by the end of April. By the end of the month we still hadn't have access to the internet. My username is [Email Removed] I receive emails and my telephone bill from Telkom using this username. In May my son made a follow up and they promised to send their technicians to inspect the route. They came and found no fault with the router and insisted that the username was incorrect. This is very frustrating because we now have buy data bundle daily from other service providers, yet I have been receiving internet account monthly usage on daily basis. Help.