Incompetence

My phone got ****** during Dec 2014 I called the call center to blacklist the Sim, busi decided to blacklist my Sim as bad debt instead of ******. My insurance queried this and after being transferred from one agent to the next it was sorted. I requested my contract be cancelled and filled out forms. A year later am still waiting. My other contract expired in Nov I filled a cancellation form but am being billed for the line for February. Call center tells me it's because of public holidays. I cancelled in the 18th Nov. I requested my prepaid no. Be used on my new contract that I took in nov. They didn't do it. I was on hold for an hour this morning still resolution to all 3 issues.