Frustrated, Ignored and Paying for poor service

Fibre network not perfoming well. I complained on the 31st of August 2022 via their call centre and i was told to expect feedback within 48 hrs. Ever since then no one has contacted me. When I try to make a follow-up all I get is that 1 automated message as their reply. I cannot continue communicating with a system. I need someone to get in touch with with me and explain to me what is happening. I am paying for the service that I'm not getting and it's unfair. I am really frustrated because I need internet for me to be able to work. The worst service i have ever had in thrir industry.