Hallman Chevrolet service staff is the greatest, I...

Hallman Chevrolet service staff is the greatest, I have always been treated with the upmost respect and given me the kind of service I appreciate. Work is always 1st class and done on time. However, their ability to get a 'trade-in estimate' left a lot to be desired. We were thinking of the possibility of trading our vehicle, but could not get a trade-in value.