Who called from 8018220038

The woman on the phone had a difficult accent to understand.  She claimed to be with a billing service provider.  Wanted to know who did my billing.  I told her I wasn't interested and hung up.

did not answer the call as I was busy.
called back because it was an 801 number [just to check out]

'the MagicJack Customer you have called is not available.'

magicjack 801 number.
not sure I want to talk to them.