Physicians Blend SCAM on the elderly. They need to be stopped! Las Vegas Nevada

 Hello I'm an care giver of an 89 year old lady named Helen W. She suffers from dementia. A man called her a week ago and as she says it was so sweet. He talked her into 600 dollars of vitiams. Her son received credit card bill and asked me to find out how to return them. On Monday I called and spoked to a man who informed me there was no refunds and that they had followed law on this transaction. She us a very confessed and I know they knew this by talking to her. Please help.