Girl this is BHm and I've just been here long enough to know all the little tips and tricks that vendors use.
You wanted to know how they got your info but somehow find yourself posting a pic of the (some lovely looking hair might I add)watermarked with an email address. (thats how you posted her contact info)
If you woud llike to show the hair go right ahead but when you can get a decent batch of hair from that very same vendor then you will understand how you where up her giving her/him/she free advertising.
You could be someone in Bangladesh they same way you could be somoene in India,Russia, Mongolia, or USa this is the internet. its not that hard.
Anythign I missed?