Mysterious phonecall

I recieved a very garbled phone message from someone named Glasscock who said he worked for a ( garbled) company and wanted to speak to myself or my brother about properties in Reeves and Culbertson. He left a phone number which I have now listened to 4 times and when I called the number I thought I heard, a Spanish speaking person hung up on me. I would consider it a crank call except he did quote both my brother and my name and we do have properties. Does anyone know a landman by this name or have any information at all about this mysterious situation? Thanks!

If the call was meaningful, they will call back. They wouldn't call unless it means money for them.