Poor customer service

I bought shoes from Tread & Miller online in December and a RAM tracking number: *** was assigned. Received a delivery from RAM On 31st December I got a delivery from RAM and signed for it thinking it was my order. Upon opening I found an invoice with tracking number: *** from Cape Union Mart for a Thulile Bhengu instead of my order. I immediately called RAM hoping the drivers could send through my shoes. Unfortunately, I was told they had no contact with the drivers. The lady I talked to promised to follow up and sort this out. I also chatted with a consultant on Live Help: Aldo Liebenberg who informed me that he'd arranged for the drivers to return and swap but to this day, my parcel is still missing. Yet it appears as delivered when tracking it. I got a call from RAM arranging to fetch the wrong parcel but when I asked the lady i called about my parcel, I was informed that that's not their problem. They just need the wrong delivery. They arranged to fetch the wrong parcel on 6 Jan. Unless someone brings along my parcel, I won't be handing this over.