They will never ARRIVE

I had a parcel to be returned. DPD is used by the company I purchased from. Logged a return on the 1st of September. Every single day I had to call and find out if the driver is coming. The driver called me on a Tuesday and Thursday that he’s coming. He never pitched. When I call the courier company they don’t even take me serious. All I get is “we will arrange collection the following day” each day is a following day. We are on the 10th of September.