I have selected a few truck that I interested, but nobody is contacting me and there is no phone number for you and dealer to follow up!!!

There is no phone number for this site... CarGurus. Entirely uninvolved in negiotations between you and seller. When you are interested in a vehicle, and fill out all the prompts, you are at the Dealers mercy to return your call or email. Odd how they aren't though.. usually they pester you to death once they have your number. One time when I had a similar question, they were filling out all the prompts and info but forgot to click on the orange "Send Message" on the bottom.

Give me one of the listings, the Year, Make/model/ and zip within 50 miles, mileage and color. I will see if I can help you find out what's going on

Your right no calls or email I was ready but no answer from anyone.