How to stop recurring donation from debit card

I didnt knew that the donation was monthly basis, I used my debit card for this purpose can anyone help me to stop the recurring donation in every month.

Assuming that you are talking about a donation to FCC, contact team@freecodecamp.org

can you tell me how to contact them it would be great help for me

uhm using the email provided?

Please email team@freecodecamp.org again. Alternatively, you should be able to contact your credit card provider and cancel the payments. I know it’s annoying, but it’s a restriction of the secure processing service.