What can I do if I don't receive my tax refund check? An average refund of $963 is waiting for 95,746 taxpayers whose refund checks have been returned to the Internal Revenue Service as undeliverable. The checks, worth a total of $92.2 million, can be claimed as soon as their owners update their addresses with the IRS. In some cases, a taxpayer has more than one check waiting. Constituents can visit the above site to check on the status of a missing refund, initiate refund tracers or change an address. A telephone version of “Where’s My Refund?” can be accessed by calling 1-800-829-1954.