Poor service

I checked my Edgars account statement in the month of September 2018 only to find out the I'm being billed for cell c airtime which I don't even receive. I called them on ********** 011 and I was given the ref no: ********** 742322 and I was told it will take 24 to 48 hours in order for me to get feedback, days went by I received nothing I called back on the 31 October 2018 only to be told that the quiry was closed as they called me with no luck. I logged another quiry and I was given a ref no: ********** ********** . Today I was told that the quiry was closed since they called me on the 04th of December 2018 with no luck and I need to log another quiry in order for them to investigate further and to refund me. I'm sick and tired of the service that I'm receiving from the call centre who call a customer once and close the quiry without resolving it. I need my money to be refunded to me.