Complaint Review: Armando Montelongo Seminar

I too, was excited to attend the 3-day training program offered by the "Apprentice" girl who gave the sales pitch at the free meeting.....my husband gave his debit card # that night but they didn't charge his account until the 2nd day of the three-day seminar.  Needless to say, we were very disappointed by the "training" which became less training & more selling of the $35k bus tour as the seminar progressed. 

Now, a couple weeks after the seminar we have received a letter with a copy of our receipt...they are requesting we sign & return the "merchant copy".........if we DO NOT sign & return this I' wondering if there's a way to get our money re-credited to the debit card???  If anyone knows, please let me know.....I am unemployed & that money was all my husband had from his tax refund. 

Any help would be greatly appreciated.....thanks!