I always have problems with DPD service. Things ne...

I always have problems with DPD service. Things never arrive on time! And if they do they leave it at the door and not even ring the doorbell. In all the cases I don't have a choice since the people who sent the packages works with this terrible service only to save a few euros. I would happily pay the extra price to get my package on time and in a proper made.
I would appreciate if someone in this company takes my feedback seriously and improves the service.