Unfortunately, we have no control over the payment methods available, as those are determined by Google Play or Apple.

Accepted payment methods in the Google Play Store:
+ Billing via mobile bill
+ PayPal
+ Credit or debit card

Accepted payment methods in the App Store:
+ PayPal
+ Credit or debit card

Accept payment methods in the Huawei AppGallery:

+ Bank cards

+ Mobile payment

+ HUAWEI Points 

Unfortunately, payment by bank transfer is not possible.