728-726-6620

Didn't answer..unknown  to caller

Got a call 5 min ago, didn't even say where the call was from, never picked up

I answered and heard a robovoice tell me "I'm sorry but that's not a valid extension. Please try again." Sounds like the caller doesn't know how to use their autocall system.

WARNING--BEWARE!! These callers are   B I G   credit card criminals, known as the card service scammers! Under NO circumstances, give these lowlifes your credit card number, or you will regret it forever! It would be wise to block the ENTIRE '728 area code', as it doesn't exist- it is spoofed, and ONLY USED BY SCAMMERS.

keeps calling, no one there, not a valid number when I try to call back

No one on the line when I answered. I Called it back and it said welcome to Verizon wireless the phone number you have dialed is not in service.
Scammers most likely.

I chose to speak to the representative to tell them I was not on the do not call list. He told me he wanted to put his big d#&* in my mouth.

did not answer phone. have since blocked phone number. creepy. how are these creeps getting phone numbers? do you think our health care 'professionals' are sharing our contact information?

Scam call.  Blocked number.

Answered and got a "not a valid extension" recording.  Blocked the number.

"Not a valid extension" and hung up.

just got a call from them, too;  didn't answer.  can't call them back to annoy them, either.

you cant dial the number back big red flag.

Just called.  did not answer.  no message left. Blocked caller.

They called but I didn't not answer

Phone rang, then when I answered I heard "I'm sorry you have entered an invalid extension", then the call hung up.

This area code doesn't exist. (Unassigned)

Kept calling. Scammer number!

caller 728-726-6620 (as unknown), I didn't answer--they did not leave a message

Did reverse lookup on this number and came to this site. Glad I didn't answer. Will be blocking this number.