worst delivery

i have order some parcels and buffalo used dpd laser as the carrier and they the worst company they have received the parcels 3 weeks and they still say that its ready for pick up they never picked up but buffalo confirmed the pick up when i called again 2 minutes later the so called agent that takes 25minute to answer says it will be delivered as they have it and 6 days later still no delivery and not even out on delivery. DONT EVER USE THEM