Why was a paid invoice refunded without my being contacted?

MartyMc

My client paid the invoice on 8/17. He received a receipt that day. THE NEXT day the Risk Team sends me a letter saying they are discontinuing providing payment services for my business & a credit card payment not made to my bank, would be canceled. So, my question is if he was able to receive a receipt out of this, why did this not show up on my account? I don't understand why my business is not allowed to continue to pay for the provision of payment services. I am looking for another service.