Vodacom fibre installation

I app**** for a Vodacom fibre contract. 30 working days ago. Then i received the router device within 7 working days and was told SADV will come in stall in 14 working days. Its been 20 working days SADV which vodacom supplier has not called or sent an sms explaining why they late and i must pay the contract for a service that has not even been installed. I need them to come immediately. im loosing business working from home.