double charging the subscription

Isn't it possible that you accidentally took out a subscription with both Deezer and Apple?

And have you tried to send in a request?

https://support.deezer.com/hc/en-gb/requests/new

First off, I think it's wild that you’ve let this go for almost a year.

I also agree with ​@awesomemac that you likely have a double subscription.

My advice would be to cancel your subscription through the Apple App Store. You're not going to get a refund, but at least you're not going to continue to pay them.

If your subscription continues as normal, then you have a valid subscription through Deezer, and you can continue with that. That is your smarter move anyway, because then you don't pay the Apple surcharge for subscribing through the App Store.

Best of luck.

I have tried but they all just turned me down, i have checked for souble subscription and it doesnt exist, only 1 device, 1 subscription