Empty water bottle PnPay policy issue

I went shopping at PnPay this morning at the Cradlestone Mall. As usual I took 6 empty 10 Liter water bottles to fill at the Water dept of the relevant merchant. I was stopped by security to check the empty bottles. The bottle containers are thus empty and not sealed,

I asked the manager at the desk for what reason this now suddenly. The Answer that makes no sense but to ask clients to rather purchase elsewhere.

This is Company Policy. 2 Employees informed mw it make no sense, The Cashier said they warned the Management and did not listen to them.

However , I decided to rather purchase all my Consumables at Checkers.

This is how companies fail in SA. Noncustomer friendly.