Like talking to a recording

I have spent over five days trying to place an order. Each time they say it was unsuccessful and when contacting customer service, they keep telling me "Transaction Failed. 3D authentication process failed or was cancelled. Please return to the merchant website and reprocess your transaction." When I check with the bank, they say: Thank you for the clarification Mr. ****** at my end I do not see any transaction being declined which means that the transaction is not even going thru, because the system has not declined it, it can probably be an error on the merchants end. At my end what I can do to be on the safe side, is mark this merchant and transaction made with this merchant as valid.

They are either unwilling or unable to admit that the issue is on their end. And they stopped communicating with me.