Poor customer service

I am battling to get answers from DSV Head office since the 16 November about my parcels, which was according to Leroy Merlin collected. There is a tracking number, but no progress, only JHB dispatched. I made several calls, and they blame Leroy Merlin to not gave them any parcels, but they have tracking number. I had spoken to DSV manager, who promised me to give me still in a while feedback, but no response. I had send several queries and made calls even to Bloemfontein branch, with only empty promises. They made me believe that the problem lies at Leroy Merlin, but why they cannot give me feedback, as there is a tracking number on their tracking website. This is really the worst service I ever had from any courier company. I