Lessons to be learned by both parties here. Always do your research before hiring someone. Even some basic thread searching will usually turn up quite a bit. Fortunately for you, malicious intent wasn't the cause of the problem. Just lack of experience.
Conversely, even if you're not very new to doing certain things, always let people know what your level of experience is. They should know going in what you're capable and not capable of. And always ask for a test site/style to do your edits in.