Mweb shocking service and I'm not a paying customer yet

I signed up to join Mweb on 19 August - I mentioned to the lady that we have existing fibre and a router, but she insisted that we would have to wait for SADV to make contact re the fibre (even-though they installed our Fibre in January 2020) and we will then receive a router (even-though we already have one) and be connected. I called today to find out why we could not just do a swop/switch to a new provider as my current provider will be cancelling from 1 September and I don't want to be without wifi - just to be told that it should have happened the day I signed up (which is more than 2 weeks ago. Bottom-line I have spend most of my airtime holding on and still no service - should I cancel this pathetic service before it has even started????