In that case, I have sent out numerous "warnings". While they are "monitoring" me, I am MONITORING them. When they start to get tacky, I just explain that I am "monitoring" their call for "quality assurance" and start taping them (I tell them what I am doing).
I said that your answering system phone said the call may be monitored for QC purposes, therefore your organization has given permission for this conversation to be taped, ergo, you have given your permission by speaking on the line.
Had him really confused. LOL
I wouldn't bother mentioning it to them -
When they say " This call may be monitored..."
I just assume they are giving ME permission to tape THEM.
I am using it to assure the quality of THEIR offer.