Capitec bank

On the 22 of August 2023 I created a bank account at Capitec Naledi Mall branch in vosloorus - immediately after creating the account, I tried to deposit cash (R11,000) into the account through their ATM machine outside the branch. After that, I waited for about a minute while their ATM was processing the transaction/deposit, soon after that their ATM gave me a 'deposit error' message and it gave back the card but not the cash I deposited. I immediately went back to the branch and lodged a complaint and they said it might take 24hrs - 48hrs or 14 days at most to resolve my case but nothing seems to be happening. I contact them every day and even go to their branch all they say is that they're still investigating (but via text they say my requested service was unsuccessful, and therefore the case has been closed). What does that even mean? Should I forget about my money? I asked them to escalate this matter and even check their cameras on that day but nothing is happening. I really hate this bank it has caused me a lot of stress.