Larger cash withdrawal - query from VoBa about this

I need to withdraw a large amount of cash (smaller five-digit amount) from my Voba account, and I have already done this to a large extent; €2,000 per day at the Voba ATM is possible. A Voba employee is trying to reach me, I assume to ask what the money is for and whether I haven't fallen victim to a scam. How can I answer specifically what the money is for? Just stick to the truth that we want to make a larger private purchase, un