Extremele poor service from Cell C for fibre

I signed up for Fibre with Cell C last year October 2017. I was informed that fibre was available in my complex. However, when Vumatel came to check fibre was not available in my complex. In July 2018 I contacted Cell C to let them know fibre had been installed in my complex. However, nobody from Cell C followed up and I decided I had already been waiting for a year to go with a another service provider who installed my fibre in a few days. I asked the agent to cancel my fibre application. However, nothing has been done.

Can you please kindly assist to cancel the data contract for 1GB a month. Also can you please advise where I need to post the router to so that I can return it. It is still sealed in the box and has never been used. I have really been disappointed by the poor service that I received from Cell C and expected better.