TomTom GO 700 Car GPS Receiver

I bought a TomTom go 700 from Crown Photo World on Aug.6 2007 that was listed to be full factory warranty, sealed, roadtested, and totally refurbished. When I received it, it would not come on, nor, would it charge up. I contacted TOMTOM and sent unit in for repairing a possible bad battery only to be told by TOMTOM that the unit had been tampered with and warranty was voided. Now, during this time, Crown Photo had sent no less than TEN e-mails wanting me to pay for added protection policy for the unit. When I e-mailed them about the problem, not only did the e-mails stop, but obviously totally ignored the problem and has never addressed it in any way. I bought the unit for $229.00, shipping was $20.00, and to ship for repair was $10.68 (with insurance). I am extremely dissapointed with this deal as well as being out $259.68. I think E-bay needs to look into this and see if you can help me retrieve my money. I have the unit ready to send back after I receive money. Thanks for any help.