Discovery Bank's Surprising Incompetence

After 3 weeks an 17 calls with reference nrs, FICA managed to change the address on my banking app. My wife sent an invitation for a secondary cardholder and after 5 business days with no feedback I called.

And my application was cancelled.

No reason, no person accountable, just cancelled, and I was instructed to try again.

Why will I try again if the system is so disappointingly useless.