Poor call quality

Poor call quality. I tried calling a few people for the past few days from my FNB sim card and it wont go through.

When I tried calling the call centre I was on hold for over 8 minutes. While on hold the call quality was **********. The voice prompt was on for 10 seconds and disappeared for 15 seconds. Its not your call centre but rather the line quality.

Now lets hear your response FNB since I cant see another way of contacting you. Furthermore please dont tell me you have high call volumes, because I have high debit order volumes and you get paid on time so I expect the same service from you.