My Bank actually failed me

Good day

I am a very unhappy client i went to the Capitec Branch in Cresta on Friday to do two reversals. One for R500 and one for R800. When i left the branch only the R500 reflected as reversed, but the R800 still does not reflect after the consultant told me it would take R40 and that it will take few hours to clear. I log a complaint to customer care and was told yesterday that i need to go back to the bank account which is not my fault. On my app under debit order disputes it shows that the R800 was disputed but why is it not in my bank account. I want this resolved today or else i will be taking this further. Its my money and its not like its a R100