Vod can leave you a feedback with his opinion about you, as you can leave one to whoever you want.

It's only good for what it is, Vod's opinion. Nothing prevents him to do so.
However, quite a lot of users value his opinions.

Maybe you will stick to your word, and no need to convince us that you will. History has shown that in a majority (if not 95%) of similar cases, users won't repay.
Too bad for you.
Good luck !