Why didn't you receive SMS notification when the change was successfully withdrawn to the bank card?

There may be several reasons why you didn't receive the SMS notification:

You may not have enabled the SMS notification function of WeChat Pay Change Pass.

The mobile phone may have network problems such as unstable signal, which leads to the short message notification not reaching your mobile phone in time.

Bank card payee's bank processing speed is slow, and it takes some time to get the account. You can log in to online banking or mobile banking with bank cards for inquiry and confirmation.

If the above reasons are not the cause of the problem, I suggest you contact WeChat customer service or bank customer service for consultation.