Overdatf Limit Increase not reflecting

I app**** for app**** for a limit increase on my Standard Bank (banking app) on 10 January 23 and the application was approved. I received a confirmation contract the same day and it is almost a week and the funds are not reflecting in my account. I made numerous calls and they say because it was a online application the call centre and branches cant help me. I think they can keep the money but now there is an enquire on my credit score and I am sitting without the funds