Customer service poor even from supervisors

From the 09/08/2021 where my first ticket was logged regarding the severe packet loss i suffer between 4pm and 11pm daily, the matter still has not been resolved i think i have already 3 different ticket numbers already and still nothing has been resolved. I had a call from an agent Themba who is apparently the senior on the second line defense and promised me feedback on Thursday the already 19/08/2021. He sent me an email at 16:58 apologizing and stating he was in meetings the whole day and will get in contact with me soon. The whole Friday nothing,the whole Monday nothing not even a response on my email.I have also requested for cancelation of my services as of the 28/08/2021 due to me relocating to an area where supersonic does not have coverage on fibre. The finance Supervisor Minnah still has not yet responded to my emails with regards to this as well that it has been noted on the system. When i signed up 2 years ago they were excellent in providing service but somewhere in January 2021 they have lost their way and i feel that clients that's not getting what they are paying for nor getting the client service should all come together to open a CPA case against them for their negligence and poor customer service.