Vumatel trying to get my wallet

2 months ago I had to pay for a new fibre installation, as Vumatel wouldn't repair a broken line - even though they had done it before, after blaming the dog or the gardening, as the previous cable was underground. New line (on the wall and roof) got broken 2 weeks ago. They (Vumatel/Nano Fibre) fixed it, explaining that thios new cable was too stretched. Last Friday the cable broke again. This time technicians blamed rats on the roof and said I should have demanded (their company!!) to put the cable in a conduit! Now they sent me a quotation for a new installation!! They want another R1,725.00!!! As if I could be responsible for their incompetence and for not protecting the line they installed. No way I'll pay for this.