PAYMENT NOT REFLECTING ON ACCOUNT

On 13/12/2014 I made a payment for my Edgars account at Jet Stores in Kenilworth Centre. I was given a receipt, but 2 weeks later I discovered that the payment was not reflecting on my account as I was receiving SMS's from Edgars stating that my account had fallen in arrears. Since then I have phoned and have personally been to the Kenilworth branch of Edgars to sort out this problem. I can't remember the name of the lady that helped me there, but she took a photo copy of my receipt and told me she would call me to let me know if I should go back to Jet store s and lay a complaint or if they (Edgars) would sort out the error. She did call me back last week and said that the store would fix the problem and deduct the payment from my account. I have just received another sms from Edgars asking me to urgently make payment to avoid bad credit rating. Please help. This is unacceptable as you have the information which I personally gave the consultant on 31/01/2015. I do not appreciate receiving these kind of emails since I have made the payment and I'm not at fault and also this affects my credit rating negatively. Definitely not cool, Edgars!