Poor processes and customer support from Discovery

I've been trying to update my banking details for my Medical Aid for 2 days now. My phone number had changed and needed to be updated in order to receive the OTP.

I phoned in, and after waiting ages to speak to a consultant (wasting airtime), the OTP had apparently been updated during the conversation. Logging in to the Discovery portal now, I see that the OTP is still going to my old cell number.

...

1st. Why is there no call back option for existing customers? However, when it comes to getting people to join up we're pestered by callers.

2nd. The consultant I spoke to yesterday said that the process to change the debit order banking details for my medical aid would take up to 6 weeks. The bank account that I'm trying to switch the debit order to is a DISCOVERY BANK ACCOUNT!! All of my other debit orders via other companies were updated in a couple days at most.

I'm tired of waiting on the support line, and resolving nothing. This should be a simple process.