called back and got short recording "you have reached a non working number from the hub group". Obviously some kind of telemarketing thing. going on blocked list.
They're going down the list calling all numbers in order to find out which ones are answered. Then they sell this info to other slimeball telemarketers.
For a call but they hung up after one ring. They didn't leave a message. I'm not calling them back. Just annoyed they are just randomly calling numbers.