No service from Edgars

I received an sms stating that I missed my payment, I made the payment IN AN EDGAR'S STORE!!, how do you explain that. I DO PAY IN ADVANCE!! I am now in a store, they ARE NOT ABLE TO HELP ME!! NOW NO ONE ANSWERS ANY PHONE FOR ANY CUSTOMER SERVICE!! What is going to happen now as I will show as a slow payer WHICH IS NOT THE CASE!! WHAT SHOULD I RESORT TO??? I HAVE BEEN CALLING A WHOLE WEEK... No human to talk to.. HELP!!