Poor telephone service

In fact I need help more than anything. I have some queries about my vehicle cover liberty short-term insurance and need to make some changes. I have been trying to get hold of them since August 2024 with no win, their lines are forever busy. That automated voice will say “you are next on the line and the consultant will be with you in one minute” and I will hold for more than an hour or until my airtime is finished. I’m so frustrated I’ve tried everything, I sent an email and they did not respond, i tried them on watsap no response, I went to Standard Bank twice already and they couldn’t help, visited the local office and there was no response to their intercom instead there was a written notice saying that one has to visit the office by appointment. I also tried the call back request option more than twice. Please hellopeter team advise what should I do now?