I have a Diners Club issued in the USA.

I have tried to BP my Diners from Walmart many times and have never been successful. Tried to pay mastercard, and Diners (Diners comes up as a payee in Walmart). Once the cashier puts in the account number, the system gives an error message. I have called Diners multiple times and they also could never figure this out.

WM also does Western Union bill payment service and I called Diners club to see if they take western union. I was told that is a NO-GO as well.

Very frustrating, any one here has managed to pay Diners using WM bill pay or make payments using debit cards?