Openserve Fiber (Telkom ISP)

I stay in Mabopane Morula view where we got fiber from Openserve (Telkom) few weeks ago. They delivered the box (router) via courier and NEVER gave me a option to choose which package I want. The box didn't work and they send another one, a technician came to make installation and it worked. Now they sent a bill for R500 which I never agreed upon. Its almost a week without network, as it suddenly went off, and call center is taking me from pillar to post. I am not getting help from anyone, and yet they still expect me to pay for a package I never chose.