How do I cancel subscriptions with no Apple Products?

I am mainly an Android user. When I was younger someone got me an iPad which lasted me 8 years, but since it had its last update in 2017 it has been slowing down and has recently died.

I do not plan on getting anymore Apple products as I am not a fan of the company, however, prior to my iPads death I had 3 subscriptions with the iTunes store. I want to transfer these subscriptions to my Playstore account some point in the future, but that is impossible. Thus, I want to cancel the subscriptions and then start them again on my Samsung phone when I'm able to.

I have no access to the Appstore to cancel my account however, since I no longer have any Apple products, whenever I try to cancel on my computer the iTunes store does not recognise my Apple ID nor password (even though they are correct because they are the ID and Password I used for the Appstore on my iPad).

When I try to change the password Apple gives me a number I do not recognise for the 2FA which essentially makes this process of cancelling impossible for me.

I have contacted my bank to cancel the subscriptions manually but that has not worked either, as today one of the subscriptions got taken out!

I could contact the Apple Store but they charge £3.50 a minute for a call, or I could go to an in person store to get a new battery on my iPad so that I can log back on to my iPad and cancel the accounts there, but I'm not sure if that would work as the iPad model is very old, and plus that would be expensive and I am a broke university student.

I literally do not know what to do. I want to cancel these subscriptions but there is no viable pathway for me to do so and I'm really stressed because the UK is in a cost of living crisis and I'm trying to save up right now and losing £14.00 a month on subscriptions I'm not currently using is really stressing me out.