to pick up on AmazinWoman's post from the other thread - we had neighbours like that as well (Maybe you live 2 doors from us!!)
Always trying to push us, and see how much they could get away with.
At the start, I was married with my ex, and he made it clear to them that we werent going to be bullied. Then, they tried it again, when he left and they thought he wasnt coming back. Now, I have to do it myself. Point being, that these neighbours are just like that.
I used to find it hard to stand up for myself. My ex advised me not to stand for any nonsense, but to call the police, so I have done, twice now.
Example being when they threw razor blades and a bag containing someone's beard clippings into my garden, just where my toddlers play. This was after ex h left, and I am sure it was some sort of macho bullying, as well as dangerous. Police were very nice, and had a word with the neighours, who were not chuffed at having the panda car outside their door, oddly enough.
Another time, I called the police after a neighbour deliberately sprayed mud all over my car. When I went to ask them why they did it, they laughed in my face. Again, the police were v nice about it and had Words with the neighbour. Not sure what they said, but it hasnt happened again.
I do find it hard to be assertive, and it is definitely one of the hardest things about being a lone parent, having to do it all myself. I really envy people who can react with the right amount of aggression by instinct.