Iuniverse has ripped me off in every area of my book. From reporting known sales and report to IRS. Internet

Iuniverse is nothing but a rip-off company. They sent an amount to the IRS that did not not match my   sales and then took 28% off of the amount that they owed me of which I did not give them permission. Second I paid to have 100,000 e-mails sent out and according to them I did not sell one book.                                                                                                                                                                                                   I also know of sales from my book that are not showing up on my iuniverse sales and royalties account. Now they want me to send them proof of sales that I know of before they give me credit.