Hi there and welcome
Bharti Airtel is a cell phone provider for making calls. Are you in the US when this comes up?
ok, it is a provider so looks like that is the only one available that Verizon uses at the time of the call.
It is possible there is an outage for a Verizon tower or just no reception from that tower so Airtel is used.
But it is a legitimate provider.
If you would like any additional information or assistance, please do not hesitate to let me know.
Else if you can take a second to rate my service by clicking one of the stars at the top of the screen then submit, that would be greatly appreciated.