glitches in discovery system

Good day. Does discovery ever get back to anyone. al the response you ever get if you send an email is that a consultant will contact you in 2 days. i have sent my first email on the 26 Feb 2020. and that was the response. why do i have to follow up on a query due to the incompetence of discovery . they cannot handle the load since changing to discovery bank and always seem to be having glitches in their system. All i want is what is rightfully mine. why when you want to redeem vouchers or see the code on the day thta it expires you can never get into the app???? Could someone please answer me on this? it hasnt only happened to me.