Through an e-mail, I agreed to art work for an advertisement for our company. That was in March 2012. Then in May BEFORE it went to print, I told them many times that I wanted to cancel our ad. They said they spent time on it and had to make changes and updates from the previous ad that we placed in a college student planner. However, there were not changes made, it was the same ad as the previous year. And again, it hadn't gone to print. Now the advertising firm is billing me and now sent it to collections. Saying that my verbal response is legally binding and I have to pay. Do I have to pay for this? Do they have a legal leg to stand on?