You should contact the IRS to discuss the matter as soon as possible. You can reach the IRS at 1-800-829-1040. Because the 1099 is an informational filing, you must address the issue as IRS will be looking for an amount that matches the reported 1099 on your tax return. If you fail to report the amount, or otherwise address it, you will receive an adjustment/ correspondence audit. Thus, the best thing you can do is to call the IRS as soon as possible.