table walks out every time they have me as a server

I don’t really have anybody else to talk about this with because basically everybody I’ve told is just like “oh well” so I figured I’d share this story here. so a very long time ago when I first started serving at this restaurant I had a table of four hutterites come in, we rarely see them come into our restaurant in the first place but I remember them because I went up to their table to greet them and get their drinks orders, a girl at that table leaves after I get the drink order and then they all get up as I’m bringing their drinks back and tell me that his wife doesn’t feel good so they have to leave and I didn’t really think anything of it. I was like oh okay no problem. anyways a year later that same table comes in and i immediately recognized them, they where sat by our other male server as i was busy at the time, but i start walking over and all four of them are STARING at me like they just watched me flash them or something, i go up and im like hey welcome back what are you getting to drink today? their response: “i don’t know just wait and we will let you know”, as i was walking away i turn around and they are walking out the door. idk if it’s me or them but yeah weird experience and im not sure how to feel😂😂