Account de*****ed

I bought an inverter from takealot on 11/11/2021. Due to insufficient stock my account my credited with 2469.00, which I am happy with however, someone pucrhased two vouchers on my account on 19/11/2021. I have withdrawn what was left as I am worried that my money might disappear. I trusted takealot, I am so disappointed. Please put my money back.