For a few years I had a random number that would text me on major holidays to wish me a happy whatever. I'd return the sentiment and sometimes we'd talk more, a few times we ended up in long back and forth text threads that lasted a couple days. At some point I admitted that I didn't know who they were and asked their name, it turned out they thought I was someone else and they had the wrong number. After that I stopped hearing from them. I tried reaching out on a couple more holidays but they just ghosted me.