Complaint Review: GB Shelter Mortgage

My grandmother, Donna S who is 75 years old, was approached my a man called Mr. Baltazar Regalado, who is a senior loan officer at GB Shelter Mortgage a division of Guarantee Bank. https://app.shelter-mortgage.com/app/index.asp?supportStaffId=709&businessLevelId=358  

He heard that my grandmother was interested in buying a property through a mutual friend. Mr. Baltazar Regalado promised my grandma the best deal and very low interest financing through GB Shelter Mortgage. The property value was of $180k He then asked my grandmother for $80k down deposit and the rest of the deal would be completed by Mr Baltazar Regalado. My grandmother gave a personal check to him for the 80 grand and then Mr. Baltazar Regalado never contacted her back. She tried many times to get a hold of him and all were unsuccessful. She told me about it after it had happened. I investigated Mr Baltazar Regalado, the address provided on the website is not an office, just a p.o. box, the phone number, which is a mobile phone, always sends me to voicemail. I reported him to the authorities, but have not received any feedback on what is going on. I also tried calling the managers of GB Shelter Mortgage around Texas and nobody has been able to help me. Avoid dealing with GB Shelter Mortgage in Texas, specially in Austin and Mr. Baltazar Regalado!!