Do you have a copy of the listing, I could have sworn it had 3.42 in the listing. But I went back to the link and the listing was removed. By my comment earlier I thought I quoted 3.42. Unless this is a different truck than the listing I quoted. If it is and you can verify is was listed at 3.42 or 3.73 you could possibly have a false advertising claim. Im not a lawyer but maybe you can leverage that to make them work with you.
2015 Forest River EVO 2850
2012 Dodge Ram 2500 6.7 Cummins
Yamaha 2k x 2 with parallel cable
EMS 30 PI portable w/ Edison plug
Nights Camped (2016-13) (2015-13)