Standard bank has no clue

I have a revolving credit loan with Standard bank on my banking app it indicated that If I pay a certain amount thar amount plus extra will be available to me. I made that payment. Suddenly another amount was given to be paid I paid that . Then it shows no amount available on revolving . I phoned customer service just to be told I need to pay even more to be able to access the funds. Now my whole salary is lying in my revolving account. And I cannot access the funds . How is your system working I use the app as my guideline and it is showing different things the whole time.