Numerous text messages from this number.  I called T-Mobile & had texting blocked.  I don't use it anyway.  It costs extra money both to send & receive.

Numerous text messages to my cell phone:  "Guess who this is"; "I'll bet you don't know who this is"; etc., etc.  I called T-Mobile & had all text messaging blocked.  I never use texting & those things cost money to send  & receive.  It adds up if someone you don't know is sending you a bunch of them.