DPD is terrible

On Monday ordered a laptop on Amazon, and they've used DPD as the courier service, as this was my first time ordering anything in Germany, I thought that it couldn't be that bad, so I looked it up and immediately saw at least 50 different red flags in the form of a 1.3-star review on Trustpilot, but I thought I couldn't do anything anymore so I just let it be.

Yesterday I had sat in front of my dormitory porch at 11:30 AM(DPD's tracking thing claimed it was going to come at anytime between 11:30-12:30) for the entire duration of the so-called "Expected arrival time" and during that time not a single DPD van appeared in my sights. They claimed that "the deliveryman has missed me and will resend it tomorrow" (today), so this morning, I did the exact same thing; sat in front of my porch for 30 minutes from 11:30 AM. Guess what? The driver just didn't show up again, after 30 minutes the tracking website once again claimed that they "had missed me and will resend it tomorrow" and at this point I'm wondering if I can just go to the depot or whatever and claim the package on their own depot. Is there anything I can do other than just helplessly waiting for a package that's likely to never come?