I really mistakenly bought a subscription, I do not have this application, I wrote 3 days for free. Please return funds

If you have a subscription, you will be charged, even if you don't use it. To view and cancel your subscriptions see here:

https://support.apple.com/en-us/HT202039

Cancelling a subscription does not generate a refund. If you feel there are extenuating circumstances that justify a refund, use this procedure: https://support.apple.com/en-us/HT204084

niloofar194 wrote:

I didnt purchase any lenses in snapchat which is payable can you please cancel and refund back my money

Niloofar, See same advice as above. This is a user forum so we are not the ones to process refund requests.

I didnt purchase any lenses in snapchat which is payable can you please cancel and refund back my money