De or het rembourszending?

The correct Dutch article is:

de rembourszending

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

How to use rembourszending

the rembourszendingde rembourszending
this rembourszendingdeze rembourszending
that rembourszendingdie rembourszending
our rembourszendingonze rembourszending
your rembourszendingjouw rembourszending
every rembourszendingelke rembourszending
which rembourszending?welke rembourszending?
a big rembourszending / the big rembourszendingeen grote rembourszending, de grote rembourszending