Resortcom International "ACTIVATION FEE" San Diego California

I bought a certificate from this company back in 2013 it was for 3 nights and 4 days in Mexico and 2 nights and 3 days in Las vegas, and that it was transferable, i tried to give the trip to Vegas to my sister I call them an e mailed them and never got an aswer back. In July 2015 i received an email about my certificate I was able to talk to a live person and i asked herabout the Vegas trip she told that first i had to go to Mexico and attend a 90 minute presentation, we all know how that one works. I ask them if i can invite another couple for the same price that i had paid, and she told me that as long they are married and make more than $50,000.00 a year no problem all we had to pay was the resort fees of $60.00 per room and $200.00 for my friend's package mine was already paid. It adds up to $320.00 I check my account and they charge me $420.00 $100.00 extra I called and ask why were there charging me more and she told me because of the "ACTIVATION FEE" i ask that person to show me were that was written on my confrimation letter, she said it wasn't and there was nothing she can do that i had just lost $100.00. Please be extra carefull when dealing with this company make sure they explained you all the fees upfront, or better yet don't deal with tem there are a lot of time share companies.