College Prep Center 30 day free trial before charging me was not honored Rancho Cucamonga California

Was cold-called by this company despite being on the do not call registry.  Company said it was a non-profit trying to help students with their SAT scores.  Company convinced a person in my household that they would send out SAT prep software free of charge for a 30 day trial; that they would call to remind us that the 30 day period was approaching so we could return the item if we didn't find it valuable; that we would not be charged until after the 30 day period if we decided to keep the software.  We were charged the fee immediately.  Have called credit card company to dispute charge.  Will be sending software back.