Looks like you might beI saw an article about that and it spooked me. Some guy who returned around 10% of his items got banned. I recently returned 2 things and then looked over all of 2018 and I have a 4 returns on 36 purchases so that's 11.1%.
j/k, hopefully you are not and I'm not trying to scare you!
That just stupid if Amazon bans users for returning couple of things.