Leaving 6aside football league - Northern ireland

hi i need some advice id really appreciate it. So basically me and my friends signed up to a 6aside league called soccer sixes. we joined when there was 4 weeks left in the season which we didn’t know at the time of signing up. We didnt want to play anymore and wanted to pull out the league.

The T&C state:

“a two week notice period must be given before the end of the current season by emailing the league manager with a request to leave 2 weeks prior to the end of the season”

I had sent a text to the league manager on the 21st of October the league ended on Sunday the 10th Of November which is more than 2 weeks.

But hes saying i had to email to pull out which i think is mad because he got the 2 weeks notice prior to this but oh well.

Then he said we have to play until they find a team to replace us which he says 2-3 weeks. It has now been alot longer than 2-3 weeks and still no team to replace us which i honestly don’t think hes trying to find one.

I had signed a contract in the first season but not the second. But i am 17 so contracts are void are they not because im under 18?

So they just put us into the 2nd season and expect us to pay although we didnt agree to it?

And they are saying that they will take us to small claims court if we do not pay the fee for the matches

Many thanks.