Beetle in my unopened bottle of wine!

[sangers]

I have just got off the phone from the customer complaints department for Winerite Ltd. I have a bottle of Frascati Superiore which is unopened and has a beetle floating in it.
As you can imagine, when the third bottle of wine arrives on the dinner table with a beetle floating in it my guests and I were quite horrified. Yet Winerite tell me that "It happens every now and then"! "Would you like a replacement bottle or a refund?".
I don't know much about this sort of thing, can anyone help? They are going to send me packaging to return the bottle to reclaim my replacement.
Is this the best I can hope for? Or should I hold out for more? Is it true that this "happens every now and then" or do they have a problem where the wine is bottled?