Horrific Service

I paid off my accounts on the 1st of May 2018, went to Edgars store in Cresta Mall on the 2nd of May 2018 to close off the account. They contacted customer care , which told me that I have mobile content therefore have to call the mobile content department to cancel. I called the mobile content department, the phone rang constantly for closed to 30mins no one was picking it up. On Friday the 4th I went to Edgars Southgate I once again tried to close off my account, Once again the mobile content department phone rings constantly no one answers. I am so annoyed, its easy to open an account at Edgars, why is it such a mission to close it off. If the mobile content department doesn't answer the phone, does it mean my account will not be closed off.