Who called from 9130000000

Have had this number show up as missed calls on my cell-phone. If I call back, a recording tells me that this number has not been assigned.

stop calling me

Regarding cell phone: Received this on 4/22/2014 at 5:36 pm. Whomever didn't leave a message, so not important.

Also on Monday, April 14 I got a weird text message "Happy Birthday Mauricio! All of us at Susan Partovi wish you a happy birthday. 301-990-0020" -- I replied text: "wrong person" -- received text "Invalid entry. Please call our office directly: & listed number again, as in original message. Anybody have an idea on this one? I didn't call.

Knowing I got above, I was very leary of a phone number with zero's.

This is KU Medical Center.

Hello this is officer so and so ...

I blocked the caller...