Over the last few months, about once a week, I have received the "call" message shown in the screen shot below of my HTC One. A bit of research says it is a home mortgage spammer, but I don't understand the message. Does anyone recognize the icon? I cannot read the rest of the message because if I "tap" the message goes away. There are no records in my text or call histories. Thoughts?

Image was edited by: Verizon Moderator