Ace glass deceptive business practices Richmond, Virginia

I brought my car in to Ace glass to find out about replacing the glass in my sun roof because of a leak. I left it there for them to check it out. They said that they would call me when finished. I never recieved a phone call, but instead went back to them several hours later to check on my car. I was greeted with a unexpected bill for $125.00 to check my glass leak. I was not informed that there would be any charge whatsoever, and did not sign an agreement of any kind. I think this is deceptive to the consumer.