Credit limit Increase not digital Savy

I app**** for a credit limit increase over a week ago, received an approval immediately, received debi check and approved it same day. Only to be told on Monday via an agent that I need to send proof of salary. Sent that on Monday up until today no feedback and the limit does not reflect on the app. Each time I query via their banking app I grt told 24hours for validation, it has been way more than 72 hours and still nothing. Why claim to be digital savvy when clearly they are not? All conflicting information from agents shows that there is no proper processes in place. This is rather upsetting and frustrating to constantly enquire but get no feedback or if you do it's all conflicting...change FNB make things simpler!