Discovery gives false information to get you to join Vitality

I was told by Vitality when I joined that I can downgrade anytime without penalty Now I am trying to downgrade my Vitality but unless I join Discovery Bank I have to pay an extra 75% to my gym membership which I am locked into for 12 months. You never told me this and asked clearly when I joined. You have no integrity. I do not want to join your bank . Please keep your word and downgrade my Vitality as promised when I joined.