UNWANTED CONTRACT AIRTIME

I had an account with Edgards which i have since paid up and closed,when i had the account i used to recieve airtime when the account was closed the airtime did not stop called vodacom to ask them to cancel the airtime i was that i had to call RMCS which i did call nd the gave me a refernce number saying that issue will be resolved.Lastweek when i was trying to port my number to telkom i was told i cant cause my number is showing that i am on contract i called RMCS again and after waiting for a long while they answered i was given another number to call which was edgars and jet helpline again i had to wait on the line while all my airtie was been spent when they answered the consultant told me that my account was closed and they do not know why i was still recieving airtime and she told me that the issue will be resolved in 24 to 48 hour.When the time frame was up i called vodacom and was told i am still showing as contract when i tried calling them today no one is answering and ths is really frustrating cause i have been calling and getting different reference number but nothung is been done.This is the latest reference number i was given EDCP ********** 539658