This sounds like you received an incorrect 1099-K. A 1099-K is a Third Party filing used to inform the IRS of payment processing.
I would first try to contact the processing company and request that a corrected 1099-K be issued. If they are unwilling to issue a corrected 1099-K, you should attach a note with your 2013 tax return explaining the problem and detailing why the 1099-K is not listed as income on your tax returns.
Additionally, I would recommend providing a copy of the 1099-k to your employer so that they can properly report the income on their return and perhaps also attach a note on their return.
Hope that helps.
Adam Brewer
Extra Information on 1099-K's can be found at: http://www.irs.gov/uac/General-FAQs-on-New-Payment-Card-Reporting-Requirements
Answered on Feb 10th, 2014 at 3:19 PM