So far I've only had problems with DPD repeatedly ...

So far I've only had problems with DPD repeatedly - the problems were the same as the 1-star reviews listed here.
I find it interesting that the reviews are mostly divided into 1 or 5 stars. I wonder if the 5-star ratings were really deposited by real customers.
But DPD will not have such unprofessional staff that they use such weak marketing tools. Or?