If you call your bank or credit card company and the Customer Service Representative  is unable to locate the transaction for the order you recently placed, please ask them to escalate your account internally. Tell them that your transaction is not being processed and it is mostly likely due to a foreign card processor. They should be able to approve the source of the prior decline. The source will be from an international transaction showing as AFF PRIMEMYBODY AV TECAMACHALCO or PrimeMyHealth.