Mystery callers/texters

I don’t know who they are, or why they call or send me messages at all! And not bother to text back when I ask “May I know who is this please?” At least have the courtesy to reply noh! So, anyway, there are now 10 numbers in my phonebook marked with question marks. Don’t even ask why I bother, but the OC in me just can’t let go that easily until I at least TRY to find out who these people are. Well, if you know me, then you shouldn’t be surprised at all. And NO, I don't think they're {or maybe just a HE for that matter} secret admirer/s. I won't flatter myself. Anyhoo, indulge me! Allow me this opportunity to post these numbers:

0916-9077187
0910-4601474
0919-6575996
0921-4971330
0926-7342959
0928-3259192
0918-4304233
0915-5486428
0920-5560780
0917-3563373

What do I hope to accomplish? Nothing really. Just want these #s out of my head (or more appropriately, out of my phonebook). NOW I can let go! :)