because of cancellation, you need to turn off the automatic debit service, otherwise you will still receive SMS.

AliPay cancellation steps: Click Settings in Alipay-My page, and then click Confidential Payment/Automatic Deduction in payment settings to find the monthly donation renewal item of UNICEF, and then click Close Service.

wechat cancellation steps: after entering wechat payment, find the notice of signing the deduction by UNICEF, which can also be found in more-help center-automatic deduction management. Then click to close the service, and click to still close it, and you can receive the notice of successful termination.