Log into http://my.imaginet.co.za/ and click on My Account in the menu on the left (Fig. 1). Then click on Financial Details.

Fig. 1

Your payment information will be displayed in a blue square in the top right corner of the screen. To update these details, click Edit.
Next to Payment Method click Edit.
Enter the correct details, and click Save.
If you're paying via debit order, you will need to enter the Branch code for your bank. If you're unsure of the code, try one of the generic codes below:

ABSA: 632005

Standard Bank: 051001

FNB: 250655

Investec: 580105

Rand Merchant Bank: 261251

Nedbank: 198765

Capitec: 470010