So what do I do if I feel I've been blocked unfairly or by mistake?In part 3, he explains what happens when bad blocks linger. I'll give you a hint... BAM!
First, contact the requester as soon as you realize you can't do their HITs anymore. Don't waste any time, because the longer you delay the more chance they'll forget the reason. They could keep a copy of the reason in their records, but they don't have to.
Be polite. Explain that you were surprised at being rejected and blocked after submitting what you thought was good work. Ask them to please tell you why the work was rejected, and if it was your mistake then tell them you're sorry and you'd like to do better. Ask them if they would please consider unblocking you and giving you a chance to prove yourself again.
If it turns out they blocked you by mistake, whether a careless error or whatever reason, ask them to please remove the block so that you can continue submitting the good work you've always enjoyed giving them.
But what if they don't respond?
In that case, you should contact Amazon. But be aware that Amazon may at first tell you that they can't get involved because it's a matter between you and the requester. They don't consider it their job to judge whether your block was fair. If they take that attitude, contact them again and ask for a supervisor to review your account and assess the true situation.
If that still doesn't get you anywhere, then please write about your experience here. I am willing to contact the requester and Amazon on your behalf if you can't get anywhere on your own. I don't have any special influence with Amazon at all, and I've never been blocked as far as I know, but I'm willing to go to bat for workers regarding the issue of having more rights.
Beware the block (Part 2)
Here's the second installment from the great MTurkforum.com post. I'm jumping in mid way through because the first half are full of real screen shots from the requester interface. Worth checking out. Here's the advice he gives: