Multiple calls everyday and there is no answer if you attend.

I'm the receptionist for my company and this number calls often, but usually hangs up when I answer (because it's unfortunately my job to answer every call). Today somebody actually replied on the other end. She told me that she was calling in regards to "my recent vehicle maintenance" and asked me approximately how many miles were on my vehicle.  I told her that this is a company line and asked if she was sure she had the correct number. Then there was some awkward silence, she said "you lost me," and then hung up. Not sure what kind of scam this is or what info they're trying to get, but hoping I didn't give too much information.

They call twice a day. No one is ever on the line.Chicken you no what.