Extreme pettiness I just want to vent

So I’m getting married this weekend. We originally were just eloping with us two and our kids because we didn’t want somebody ruining it for us with how our families are. Well just a couple weeks ago his parents really wanted to go so we gave in and was letting his parents and my mom go. Well Mother’s Day came and my fiancé got his mom a pretty hanging basket and flowers to put in it. They were so mad that he didn’t get her a gift card as well so she blocked us both on Facebook and wanted back multiple things that was in our house from them. This happened last year as well on Mother’s Day. He told them her gift would be late because we absolutely had no money! He was trying to go get a certificate so he could get a better job. (which he end up not going finishing because his parents made him feel like shit) they went and blocked us both and didn’t talk to us for FIVE MONTHS. Over a fucking gift. Oh and the day before Mother’s Day they texted him saying don’t forget a gift this year and kept texting to get stuff and when is he bringing it over. For one he’s never forgot and has always got her a gift. I’m assuming wasn’t good enough to them since they apparently forgot he got her things each year. He felt so obligated to get her something like it didn’t feel special at all. So last Christmas they gifted us a baby swing well they wanted that back just after this crap happened. (Along with a few other things) They text me saying where’s the rest of it we can’t even do anything with it I said that’s why I don’t like gifts from people they want it back and expect it to be in the same condition after being used often I don’t have any idea where the rest of the things are to that swing. 🤦🏻‍♀️ I don’t want them getting me or my kids “gifts” ever again. It’s a shame they act like this especially the week of our wedding. They also live the next street over and for the whole first like year and a half they never came over to visit the kids ever! And expected us to bring them over to them. They can happily walk themselves to us if they really wanted to see them. It’s harder taking kids out then moving your own grown body. I’m just so irritated how petty they acted over not receiving a gift card!!! I really can’t wait for us to move hopefully in a year because they always spying on us telling us we need to cut our grass like obviously we know we see it everyday and will get it it when we are free. And in our business asking if we paid rent and will say where did we go noticing our car isn’t there. We are GROWN, RESPONSIBLE, ADULTS& PARENTS! Im done with them!