When I moved to my current location 10 yrs ago, a lady at the local supermarket was friendly and acted as if she knew me, but I knew she must have me mixed up with someone else, so I was polite in return and left it at that...or so I thought.
Even now she continually invites me to her house stating 'I still live in my parents old house, so I don't need to give you the address' and no way would she accept that I had never seen her before in my life. Next time I see her she is angry and insulting because I didn't arrive at her house for the lunch/dinner/coffee/etc.
According to her, we were best friends throughout school (years and years) and we went everywhere together even at weekends and during school holidays. She says her mother (now passed away) would be very upset with me because I'm shunning her daughter.
I have 'never' lived in this area until 10 yrs ago and 'never' went to school here and I just wish she would accept that she's made a mistake. Frankly, she got quite obsessive, stalkerish, nasty and was creeping me out, so much so that I order online with home delivery so I didn't have to face her yet again.
Sometimes people do make mistakes and for whatever reason have decided they are right and you are wrong....I don't know why or how to fix it, but the whole thing was quite upsetting and forced me to change my shopping (at a cost to me) just to avoid her. I have a very good memory for both names and faces and have 'never' met this woman, ever!!