Vodacom Fiber (interim LTE)

I've app**** for Vodacom Fiber in November ,i was told by Vodacom that in my area the fiber still says 'pending' so they will have to give me the interim router . i waited for the interim router for 3 months before it was delivered ,they delivered the router that's not working ,when calling the fiber support i was first promised that after 24 hours the issue will be resolved .Today marks 3 weeks ,i want my contract cancelled so that i can apply with other services providers - i was told they cant cancel straight away they will to log a services request for me .now i am stuck with a router that's not working and a i have to call Vodacom everyday to do the follow up call's .This is really frustrating i just need Vodacom to come collect their router that's not working and cancel the contract I've had enough .