Product bought incomplete - parts missing. Bad service

I ordered a bicycle as Christmas present for my daughter we opened it today, it has no seat 🥹

I called Makro on the ***number I was told that I should have checked the box within 14 days and that there is nothing they can do for me now.

Makro should have quality checks in place when orders get packed and shipped!

This was bought as a present for Christmas hence only opening it now! What can I do with a bicycle without a seat??

I need someone to please assist in this matter as this is really bad customer service.