Very poor service :(

I have been a loyal Cell C customer for around 20 years now. I have never struggled with service from them like I am at the moment. Since a week ago I have had not network coverage on my main phone sim card. After numerous telephone calls and setting changes that they advise that I needed to do, which did not work at all by the way, I am still without network coverage. I have logged a call, Ref number ***, and when I called again to follow up they told me that I should just wait until it is resolved. Until when must I wait, next year??? I cannot function like this. I am reliant on my phone to do my work. I cannot connect to a network, not even Vodacom. The other query I have is that I also, unfortunately, ordered a data package with a router from Cell C around 2 weeks ago. It was delivered over a week ago and I still can't use it. 1st they told me that the sim would be activated automatically within 24 hours. Days went by without anything happening. I phoned them on Monday and then they told me it should actually be activated manually and I must phone them to do that. Once this was done they told me the sim in the router should now be active within 24 hours......it is more than 48 hours later and I'm still waiting. Cell C, you should seriously get your act together, you will definitely lose me as a client.