Vodacom BAD Service

I changed my contract to a data contract with A WiFi router last year November. The router didn't work and had to go for repairs, got it back and it worked. My husband then passed away in January this year and I never tried to use the router till 2 days ago but paid my contract dutifully. I called vodacom yesterday to get assistance and was told that my Sim expired. So in I go to vodashop in southdale. I was then told that I had to pay for a Sim swop and they have to send the router in for repairs AGAIN. OMG. I am so fed up with vodacom, and the bad service. I am a contract holder and pay it every month and pay for something I have no use of. I have been a customer for over 15 years!!! Come on guys, get your act together!!!!!