Still waiting for feedback after 3 calls and 2 emails

I recently dealt with Mduduzi Ndlovu at the Standard Bank call centre, he promised to email me a list of requirements needed for my application, I never received his email so I called again two days thereafter and I got through to his colleague who assisted me with Mdu's email, I have emailed Mdu on Friday and I am still waiting for him to acknowledge the receipt of my email.

Terribly disappointed by the service we receive by these call centres!