Xbox game pass 3 month trial for £1

So i took advantage of this offer and straight away headed to the account management to turn off recurring billing. Whilst there is said if i turn it off i will lose my xbox gamepass ultimate in january 2021. We are now in 2019 and i i have paid £1 for
3 months so i was expecting it to say i will lose the privileges in march 2020? i am so confused buy it i am about to just cancel and get a refund

How can the next charge be 2021?

:)