Absa mobile app issues

Hi I opened a new business account would Absa. I have downloaded the mobile app. When trying for a verification code I get no response and no code is send and it says no input received try again. Which I did but still no luck. I’m am not on WiFi. I’m on my mobile data. I have called Absa and they cannot help me. They say I have to go into the branch to sort this out. This is so inconvenient and time wasting and never expect this from Absa .I have been trying for the pass 2 weeks now. Looks like I have to cancel this account and move to Nedbank