Standard (*)ank

I've been trying for more than 3 weeks to have my investment accounts relinked to my internet banking profile from which they mysteriously disappeared. I received an email saying the issue has been resolved, but it hasn't! I still can't access the accounts. I decided to take it up with Standard Bank's complaints resolution centre who promise to acknowledge complaints in 24 hrs and resolve in 8 working days. Well, it's been 2 days and they've still not even acknowledged my complaint. Not even an auto-response email! Next step banking ombudsman?