Have you handled relinquishment of Silver Lake resort contracts

I bought a week way back in the early ’90s at Puerta Calma resort in Puerto Rico in Gran Canaria. I paid over £8k and it came with 2 years free fees.
Roughly 6 months after the purchase I realised it would be of no use to me. I contacted the resort repeatedly informing them I did not need the week I purchased and could refund my money or as the management of the resort could they resell it for me. I never got a response to my numerous requests.
Then I started to get invoices for the annual fees. Again I contacted them again I was ignored. In voices kept coming for several years then stopped and I’ve heard nothing since! I honestly believe I was robbed of the £8k?

I have a timeshare at Westgate and after my husband passed away I could no longer afford it. I struggled and paid off the mortgage but have not paid the maintenance for 5years they are now chasing me for €7500. I feel let down by them as they totally lied when they sold us the weeks.

Seasons Holidays plc who own Slaley Hall Lodges Ltd have written to Timeshare owners at Slaley Hall informing them that they are calling for a Special General Meeting to wind up the Owners Club from 30/12/2021.
As they, Seasons plc, claim to own 80% of available weeks this apparently allows them to call the SGM and to have the resolution passed they need 75% of the vote. Therefore the vote is already a foregone conclusion.
What rights if any do the individual owners have?
I’m sure other owners will have raised questions but any advice you can provide would be greatly appreciated.