Our last set of neighbours were difficult. We lived there for 4 years & moved away 3 years ago. It was never a forever house, we moved there to be near my mum after she was widowed & it became clear that it wasn't just grief that was making her behave in a slightly odd manner but the very early stages of Alzheimer's.
Neighbours on one side seemed okay at first although excessively friendly - couldn't leave the house without one of them popping out to say hello & start a chat. It was a quiet road with a long curve, the houses were all set back with longish drives, their house was at the back of the curve (if that makes sense) so they had good visibility of several houses & driveways. They'd always be sitting by the window, you could see them through the slats in the blinds, so any neighbour walking by got the same treatment.
However this gradually morphed into racist & homophobic comments, didn't stop when I told them my mum was Irish & I've always have an Irish passport since a child etc, I then got lots of 'paddy' jokes & IRA comments plus all kinds of ignorant assumptions about my Irish background. As my family are from the south & Protestant, (which is unusual & difficult but that's another story!) every assumption was completely wrong!
They took all my parcels in. I was at mums most days so was initially grateful. However, they would ask what was in it..... & some of them looked liked they'd opened them & taped them up again but I couldn't be 100% sure enough to challenge them. Despite me asking all the delivery companies to leave parcels behind the wheelie bins on the drive several times, my neighbours still got the parcels, so I suspect they saw them their & just took them in.
He thought I dressed oddly..... I still don't know what he meant about that, I favour a slight boho look & like colour but nothing too extreme, a lot of my clothes are monsoon /boden type. Mind you this is from a man who lived in his grey track suit bottoms & vest.
She came round with a parcel one day, took it, said thank you. She then stood on the doorstep looking at me which I thought was odd but said 'is there anything else I can help you with' as I couldn't think of anything else to say, she asked where my DH was, I said out for the day at the rugby, she still stood there, so after what felt like a long uncomfortable silence, I said goodby, have a good day & shut the door. Her husband came out the next day when DH in the driveway asking what his wife had done to offend me & why I hadn't invited her in for coffee as the previous neighbours had always gone this when the husbands were out for the day!
Lots more along these lines but the final straw was when my mum was dying (which they knew) they suddenly started to complain about a tree at the bottom of our very long garden throwing shadows onto their conservatory. It was an ornamental tree so not that large, looking at the distances it looked fairly impossible for it to be doing that. It was a slow growing tree that appeared to have reached full maturity when we've moved in so didn't seem to have grown which the old estate agent photos proved. However, we said we would trim it, they could say to what height (within reason) but as my mum was dying, it was only a matter of days & once the inevitable happened, we'd be putting the house on the market, could she wait a couple of weeks. No she couldn't, we were 'selfish neighbours as good neighbours put other people first.' When my DH, said, 'Great, then as a good neighbour I'm so grateful you'll put us first in this difficult time ' she had s complete meltdown & tantrum. To be fair, her husband did come round and sort of apologise but it was all about how we needed to understand how everything was difficult for his wife!
We've now moved and have lovely neighbours either side!