Account closure

On the 22nd of August I paid the full owing amount at Edgars stores in Centurion, the account was already handed over to ITCB. After ter sending through the proof of payment, ITCB cleared the account. Edgars stores which has been handed to RCS group told me they can't close the account because there's a credit balance that needs to be refunded. I've been sending my banking details and all the documents they've been asking for. It's now almost 3 months and my account hasn't been closed and still waiting for my refund. I'm sick and tired of this *********** service. I just want that account closed that's all