Ready Travel & Incentives BIG RIPOFF Irving Texas

My report is the same as reported on 2/14/14. I attented the same program. 2 round-tripairline tickets 2 nights hotel and 3 day car rental. I was to send $100.00 money order. my cancellation letter came on the 17th of march and Activation failed due to NOT received via Certified Mail, that they bound by the Terms & conditions,however I could not find In the terms & conditions where it said to send it via certified Mail, I guess that was the only excuse they had to cancel my activation. Can you tell me why it has to be by certified mail? All it said on the Activation form was to complete form and mail to: Ready Travel & Incentives,PO Box 167983, Irving, TX.75016.