Unfair business practice and ********* advertising

I app**** for fiber installation in January and Vumatel performed installation which was to be followed by delivery of a router by ISP. My ISP is Accelerit which has never contacted me for delivery. It is only in May when I started looking for an ISP that Vumatel advised me that Accelerit is my ISP and I cannot find another ISP. When I contacted Accelerit, they claimed not to have my name or details but advised me to pay installation fee of R1700.00 should I want to continue. I refused to pay as when I app**** in the internet installation was free. Now Iam not able to get an ISP because Vumatel says my ISP is Accelerit and the latter refuses to remove me from Vumatel so I may be able to get another ISP. This happens because Vumatel is the only provider of fiber where I live.