We've been in our house about a year. We only have one neighbour, their back garden was higher than ours, they could easily see over the fence. They used to look over it to talk to us, either to call our puppy over to them or demand (not ask), for their football back, multiple times a week.
We put up a taller fence, they complained but it was within regs and owned by us. They repeatedly boot footballs at the fence past 11pm, scream and shout frequently. Their youngest is 9 and football mad. The ball comes over the fence often despite us asking them to be more careful. They've hit our puppy numerous times, me even more and damaged over 3k worth of our property (plants, ornaments, garden tables, etc). We've asked them to be more careful but it's falling on deaf ears. We're not too bothered by the noise as we are usually inside by then.
The neighbour on their other side is now selling. This morning my husband was upstairs with the window open and heard the neighbour talking to a potential buyer. They were saying we are unsocial, they can't enjoy their garden as they have to go to the park more (the park is about 120m for our houses), we're kids so don't know about anything (all of us are in our 30s).
My husband called them a VERY naughty word and said to leave them to it. However, I am raging (also pregnant and hormonal!!), my friends and work colleagues often call me a pushover and say I need to stand up for myself more.
YANBU - they're difficult and we should be more firm
YABU - suck it up and calm down