Not happy with vodacom customer service!!

I have had a bad experience with vodacom the past few weeks. I took in my router for repairs at vodacom repairs. I stayed 2 weeks without internet and I work from home Internet is a need for me. After 2 weeks the have sent me SMS to come collect the new device. The router device did not work from a get GO! They had to book it for repairs again. As I'm writing this I'm still waiting for feedback from vodacom and it's taking another 2 weeks. Worst thing vodacom knows the "ALCATELs router devices" have issues. But they have refused to make ammend to provide a different model which they said that its better than the current one I have.