Just wanted to chime in and say I also received a call from +1 305 447 2819 today.

In my case, I was actually expecting a call from Avianca as I made a LM redemption yesterday morning via the website, which could not be completed online for some reason. Avianca issued a record locator for the tickets and after speaking w/ their customer support team via Twitter and email, they confirmed that someone would be reaching out to me to process payment for the taxes + fees, thus completing the reservation.

So, this afternoon I received three consecutive calls from this unknown number, each of which I declined as I assumed it was a telemarketer and then after listening to the voicemail they left, the caller claimed to be from Avianca, calling to complete the booking.

I don't know what to think. On the one hand, I can totally see how this could be a scam, orchestrated by a rogue employee with access to our information as others have suggested. On the other hand, I was expecting a call along these lines.

Another detail is that the caller did not leave a callback number even though they requested that I call back. And calling the number they called me from leads to some sort of "this number is not in service" message.