How hard is it to update bank details???

All I want to do is change my bank details. I submit the application form. Then I get a reply saying "we don't accept digital signatures" They ask me to send them an en email essentially requesting that they can accept my digital signature. I do that. Get another reply saying we need proof of your bank details even though I already submitted that in the first email. So I submit that again. Then I get another email saying I needed to fill out section 3.1. But section 3.1 is only if you want to change the bank details that Discovery uses to collect it's premiums. I don't want to change those details I just want to change the details where Discovery pays me. So I reply to that email explaining that. Then I get another email saying we've cancelled your request to update bank details!

Guys seriously this should not be a hard thing. I've closed down my bank account and opened a new one. I would like you to please use this new bank account for all payments from Discovery to me. I've submitted proof that these new bank details are indeed my bank details. So please can we get this done already. Right now I have a claim in the amount of R3600 that I can't submit until my bank details are changed. So it's causing a lot fo stress. Please help.

Thank you