worst service delivery

I am very unhappy with the service delivery from SuperSonic. I app**** for fibre on the 15 July, got the installation done by Vumatel on 21 of July. Since then I never heard from them other than telling me the installation is still being done and that the router will be delivered soon. I have made 3 calls per day with each agent giving me a different response to find out when delivery of the router will take place and when activation will happen. I feel that I should just cancel with SuperSonic before I start paying anything and experience the worst down the line. The call centre does not get any updates and they do no know what to do and how to assist.