De or het bestelbevestiging?

The correct Dutch article is:

de bestelbevestiging

Rule Words ending in -ing: almost always de. See the rule

How to use bestelbevestiging

the bestelbevestigingde bestelbevestiging
this bestelbevestigingdeze bestelbevestiging
that bestelbevestigingdie bestelbevestiging
our bestelbevestigingonze bestelbevestiging
your bestelbevestigingjouw bestelbevestiging
every bestelbevestigingelke bestelbevestiging
which bestelbevestiging?welke bestelbevestiging?
a big bestelbevestiging / the big bestelbevestigingeen grote bestelbevestiging, de grote bestelbevestiging