I have a pretty good idea what happened here, but before I answer I need to know:
The invitation - How was it presented?
Was it a phone call?
A letter?
A pre-printed slick?
How was it personalized?
Hand written?
Mailing label?
If it had your name on it, how formal was it?
(As in addressed to Mr. Ms. Mrs.?)
It was a hand written address to me specifically. It contained two tickets to a “VIP” luncheon for many of my symptoms.
The card inside was preprinted without my name.
It was addresses to Mr. Me full name.