Bad Service

I have contacted the call centre to reconnect me 4 times. I have emailed my proof of payment many times to the staff. When I phone the call centre the staff sometimes dont understand english. I am struggling with the call centre to reconnect me. I spoke to 4 different people and no one gives me feedback. I ask to speak to a supervisor and he is not available the staff advised me that he will contact me in 24 hours. When I asked to speak to a supervisor I had to hold on for 20min. It is so unprofessional.