No communication between call center and accounts

I purchased a fridge from Game and have been paying by electronic transfer. I made a payment on 30 April of R1000.00. Unfortunately the wrong reference no appeared of the proof of payment. I then received an sms saying my account was in arrears. Which I understand as the wrong account no appeared of the proof of payment. I phoned the call center and explained the situation. I then emailed the proof of payment and gave them my correct account no. I know that it was received as each time I got a read receipt. This was done 4 times. As each time I phoned to follow up I was told that they had not received my email. I then got a call last week Monday to say that they had now processed my payment and would credit my account. I phoned them again today and now they tell me that they have a new system and have still not credited my account. I was also told that their Supervisor was in a meeting and I could not talk to him/her. I have even been to the new Watercrest Center and Pinetown Branch and explained all my woes to them. The original email was sent on 12 May 2015. This is getting beyond a joke and this needs to be sorted asap.