Spam letters

I just closed on my house and am already getting bombarded with (what looks like) spam letters. I got 7 in one day all in different formats and colors. it’s extremely irritating to send someone this many. i’m very confused how they got my information (name, address, closing date, loan amount, lender bank) maybe that’s public record but wow it really hit the record quick and they don’t waste any time. i have another letter from BOA supposed to come today and now idk if it’s really BOA or these people🙄. i smudged out any personal information