What can I do if I’m the victim of serial downvoting?
I'm not sure if this is a good question, but I don't have other place to get a good answer. In the last few days, I started receiving downvotes in different answers in an instance, it felt like someone going to my profile, check my answers and started downvoting for who knows a reason. What it really pisses me off is if this person has anything against me why just throw the rock and hide the hand! I would accept the downvotes if I wasn't right, but these answers were upvoted and some of them marked as the answer, so this problem really worries me. The last thing I could imagine is that SO blocks my account for many downvotes (I hope to be wrong here). What could I do to stop this?
Note: I'm not asking for a sniffer that will stop the downvotes or you to give me back the lost rep. I just want to know if I should really worry about SO blocking my account. The personal problem between people on SO and me is outside of this question.