Mweb doesnt care..

I had my fibre moved to my new address, they came and installed it but it hasn't worked in two months and now I am getting an account to make payment, when you phone them you have to load actual airtime cause its a 087 number, and when it dies mid call they dont bother phoning you back, I've had several people say they would call back after checking the problem but still nothing. How am I to pay for something that doesnt work?