<prompt> Human: I received an email from Pay1040.com stating the following:Thank you for using Pay1040s Online Payment Service at This email confirms that your federal tax payment was received and processed by PAY1040 on 1082017 8:22 AM CT. The IRS will use this date as the effective date of your payment. Typically, it takes the IRS 5 to 7 business days to post this payment to your account. Your confirmation number is 4841123. If you would like a paper receipt, please visit and select the Payment Verification option located under Taxpayer Tools at the top of the page.I verified the site was legitimate, navigated to the website and called their support number. The associate on the phone informed me that a payment was posted using a Mastercard, a card which I do not have. Further, I was informed that the SSN, email, phone number and address associated with the payment all match mine.I have already frozen my credit with all three bureaus following the Equifax breach. I am not due a refund this year and still owe approximately 10,000 for FY2016, so it does not seem like my tax refund is in jeopardy. Is that line of thinking correct?Finally, what are the other potential ramifications of this situation and what else do I need to do to protect myself?  <response>: I recommend you wait the 7 days described in the email, and then call IRS customer service toll-free at 1-800-829-1040 M - F 7am - 7pm local time and speak with a representative. Describe the facts and circumstances as you have above, and they will research your federal account for the payment. Assuming the payment erroneously posts to your tax account, it can be moved off to a holding tank for unidentified payments.If the payment is accidentally refunded to you, do not deposit the check, and contact IRS as soon as possible. 