Hotelera Chicome S.A. de C.V. Krystal Cancun review: Timeshare - krystal resorts cancun done on 2017

I cancelled The Timeshare Service Agreement, after a couple of payments and communicating about my decision to cancel due to healthy issues that unable me to travel.
I never use the timeshare I was told I will receive a bill for the amenities We received (my Husband and I] dinner at a restaurant and the xcaret with a mexican show.
I received a Collection bill (Resort Recovery Solutions] for $7, 197.50
I do not want to pay because I did not use any Year any resort, I am asking for a copy of the Agreement unfortunately I can not find mine.
Membership number CHCC-KRCC-13320 dated 01-07-2017
Client reference [protected] act # [protected]