Who called from 2136396507

I got a call from Alexander Ucol, Facebook Sales Representative. He asked me if I am an advertiser of Facebook and I told him that if he was from Facebook he could tell me. He sent a follow up email

We received a call from this person too (Alex @  213-639-6507). Doesn't sound legit. He wants us to spend money, provide personal information and business info... wants $50.00 per day

Alexander U, Facebook Sales Representative. He says his email is:  [email protected]
Bit got nothing from that address.