Absolutely YANBU @Minniliscious What a cheeky fecker. I used to know a woman like this - and tbh I ghosted her #sorrynotsorry ... She was someone who lived in my area (I met her at a hobby group.) She clung on to me for dear life, and rang me and texted me all the time. She regularly 'popped round' for coffee, after texting me and saying 'shall I pop round?' and being told NO I am busy/going out/going for a sleep/not well. Like your neighbour, she would say 'well I'll only stop half hour' and then she would stop 2 hours!
One time I was helping DD pack for uni, as she was going back the next day (after the Easter break.) This woman rang me (I didn't answer) and she left me a voicemail saying 'I will be there in 20 minutes for a coffee and a chat.' I texted her and said 'NO, I am busy today, please don't come today! My daughter is going back to uni, and we are very busy.' She ignored my text and came anyway. Me and DD were in the bedroom upstairs, DH had the car, and when I looked out of the landing window, I saw her coming up the road. I was like 
FFS!!!
Anyway, I didn't answer the door and told DD to be quiet. She knocked for about 10 minutes! She came round the back, she knocked the front and back doors, she knocked every downstairs window, and went to the end of the back garden and stretched up to see if she could see in the upstairs windows! 
She rang me again. I let it go to voicemail. Not sure if she heard the phone from outside, but at that point I didn't care, I was so angry.
The she left. Thank fuck. Half an hour later, a POLICEMAN turned up. Knocked the front door, and called through the letterbox - 'Mrs Birdsong are you OK?' The stupid bint had rung the police and said she believes I may have hurt myself and may be trapped in the house. I opened the door to him, and she was on the opposite side of the road watching. I said 'I am so sorry you have had your time wasted. I didn't answer to this woman because I am terribly busy and she refused to get the message - please don't come!' He was like 
She started to walk over and waved. I ushered the policeman in and shut the door in her face. She started fucking knocking! It was like a bad dream. She was like a stalker! 💀 I said 'please go out there and tell her I am fine and to stop knocking my door. She is actually hounding me now!' He went back out, and spoke to her. She left.
She didn't bother me for a few days, but them started ringing and texting! It was horrible. I was glad to leave the area. I left 6 or so months later. It honestly put me off becoming friends with ANYone who lives closeby again. Like a few other posters here, I never get involved with neighbours. No interest in being friends, or socialising with them. A Christmas card yes, and a 2 minute chat once or twice a month about the weather, and I will step up in an emergency, but that's it. No more.
ALSO, a couple of relatives (extended family) a few years ago, used to turn up at weekends (uninvited) and sit their arse down, demand a drink, eat half our food, and not go for 5-6 hours. They don't come often now. They won't 'pop in' uninvited if you're 2 hours away! Hardly see them now, thank fuck!
You can see who the entitled popper-inners are on this thread! 😆 'OP, you were rude to not let her in!' PMSL give over! She was not! 😂 As many posters have said, not wanting to socialise is a good enough reason not to! People don't need an excuse. It's OK to just say no! As I said, you can tell who the entitled 'popper-inners' are here! The ones who demand people drop everything for them, instantly! So arrogant!