[mothered]

they will pick it up form the address I declared.

Tell them that your work contacted you at the last minute and to meet a high volume of Christmas sales, you'll be away from home (or the address you declared) for the next week or so.

As such you cannot make arrangements for the package to be collected, and due to moving from one location to the next for work purposes, you cannot drop It off at a DHL Service Point. See how they react to that.

You can also mention that you're happy to send the package (seemingly from work) via another carrier service, thereby you can box them.