No Internet

I`ve been with Supersonic for 5 days now, Router was delivered on 03-06-2021, Was connected on the 4th, the Internet went down on the 05-06-2021 at 6am, Called the call centre numerous times spoke to 9 agents from Saturday until this morning, been posting on their Facebook page and sending messages on Facebook, each time being told that the engineers are looking into it, I work from and this was a way to make my life easier, I've paid R999 upfront which I expected exceptional service from. How long will I get the excuse that the Engineers are looking into it, If the Router or sim is faulty send me a new one, I feel soo cheated and I cannot believe that so many other people have been ****** of there hard-earned money, R999 is not cheap.