Complaint Review: Trent Richardson

Hi there i became part of the Trent Richardson No Money Down Mentorship sponsored by himself and Aiden Win of BC. I bank transfered 8500 dollars to recieve this so called training which is a spin off of mentorship material that is already available via Rich Dad poor Dad seminars etc for way cheaper than up to 10000 which was the original asking fee by these 2 men.  It has been 4 yrs since they have had my money and i would like it back considering i have never met and or recieved training from them. Is it too late to pursue this matter of a refund in which i was denied on earlier requests? or can this legal matter of money being rightfully returned to myself be negotiated thru the courts? we had an agreement to meet up this summer but i keep getting the run around... i made sure to keep all emails and print off copies of money transfers into their business account in vancouver. would love to receive some feedback on this matter thank you!