Unable to cancel subscription

I took a trial for lightroom and without choosing or requesting a yearly subscription I was given one. When I got through the pictures I needed to edit I was told that I could not cancel my subscription.

I never choose a subscription, I was given one.

I have had this for over a year, I cannot afford it, and they still won't allow me to cancel. Even after a year I cannot cancel. I never signed up for a year long contact in the first place.

Apparently without ever requesting a subscription Adobe have decided to force a lifelong contract on me.

How can they decide to sign me up for a contract without even contacting me. I don't even use this software, they are just taking my money and I can't stop it.