Who called from 3608189050

I've gotten 3 calls from this number in 2 days. No message left

I have been receiving calls from this number almost everyday.  The phone rings twice then hangs up. This has been going on for a very long time.

Been receiving calls from this number everyday for about 2 months, rings twice then hangs up, call the number back and a recording says this number no longer in service. Hmmmmmmmmmm

Pushy salesman trying to convince me to change my credit card payment/banking system for my business.

Same here.  I never call back numbers I don't know.  But this one is scamming the system- I can't block the number.