why can i not give a review and when i cannot is there not a number to call
Apparently they hide behind the companies they support. MY ADVICE DO NOT USE CARGURUS TO PURCHASE A VEHICLE. They do not have reputable dealers or individuals, as there is no way to voice a complaint or call to do same.
There is a way to voice a concern, use the "contact us" link at the bottom of the page.
Only if you contacted a seller through cargurus will they ask for your review. You'll receive an email in about 2 weeks from the date of contact asking for your review. BTW I bought my '94 Fleetwood from a dealer who had it advertised on this site and it's a great car. Exactly as it was pictured and described!! HTH. -Jim