Wow. Have also been targeted here and looked the number up just now as was getting worried about this person for they keep contacting and simply will not take a hint.
Some people need to realize they are always the common denominator and back OFF!

some blank text with some 177kb thing attached to it - no idea but dodgy as and clearly up to no good.

Sends some text with nothing on it too large to accept. When you ring back it goes straight to some bad music after 2 rings . Some kind of scam and so over these pathetic annoyances disturbing your time. Time they start charging these people.