Who called from 2030510988

Received call @ 18:30 today. Caller said he was from "MasterCard" and was going to offer a lower rate.
I asked to confirm some of my account details and received bogus info. Caller hung up when I told him bogus info was incorrect.
This is a fraudster trying to obtain personal information.
I called number back. It is invalid
Beware of scammers.

Caller said he was from Visa MasterCard and wanted to lower my rate. Told him we didn't have a credit card and I wanted to know the name of the company he was calling from and he started calling me names and threatening to come and rape me and that my government was a joke. I hung up right away. Pretty disturbing

Got a call from then I don't answer unknown numbers I'm blocking their number.

What are you want ?

This number called us at 9:00 pm local time. No response. Dead air then hung up. Not the first time they have called.