There was a contract for services, but not a description of those services in the contract. Per the emails, I was instructed to "go crazy with color" and "use my judgement" and so I did, only to find out that what I chose was not to his liking. There were many emails with options for him to choose and he made comments about his likes, but always said he trusted my judgement. Of course I felt awful that he was disappointed so I offered him a credit for another event, however, he is now demanding the credit be a refund or he is going to pursue further action. Since he used the services and didn't ask that I remove them, I don't feel I should owe him anything. Am I damned if I do and damned if I don't?