Fifty bucks is a commitment?

I wrote a while back that I had succumbed to a letter from Minnesota Public Radio to help them out with a "Capital Campaign" and sent in a $50 impulsive online donation.

Today I got a letter from Jon, who is a CFRE?, and a Senior VP of MPR. Jon writes:

"Thank you so much for your commitment of $50....I appreciate your thoughtful deliberation regarding your philanthropic priorities. Per your request, we will charge your credit card according to your instructions to fulfill your campaign commitment."

I think I quit giving to MPR sometime back on the "80's when their Minnesota Monthly magazine went totally glossy. Seems to me like little has changed. Did I miss checking the box "Please no thank you letter from a CFRE, Senior VP?" Don't even think of calling me to ask for more.