But I don't know you....

Often when I answer the phone either at home or at work, the person on the phone says "Itsumo osewa ni natte imasu." This roughly translates into "Thank you for your continued support."

Now, if someone I actually know said that to me, I wouldn't feel weird. BUT, these telemarketers, I've NEVER once before talked to them or even heard of them. So whenever someone I haven't talked to before calls and says this to me, I immediately start wondering "Why is this person saying this to me? I don't even know this person. Why do you say that to someone you've never met before? Why? Why? Why?" and I miss most of what the caller has just said and only catch the last part, which usually is some sort of sales pitch. So I just say, "sorry, I'm not interested" and hang-up. I keep wondering though, why people say that over here.

There's a lot of other things people say over here purely from custom or out of habit, that I don't know why they say because it totally doesn't make sense to me. I keep wondering why people say certain things over here, when from my perspective, it doesn't seem to be serving any purpose. If I could see the point of the greetings being used, I'd be able to make sense of things, but for now, I'm just confused. There's lots of words being spoken, but I don't understand what it's supposed to communicate.

I thought words were supposed to communicate SOMETHING....I guess sometimes it doesn't work that way.