Courier delivered to the wrong person, PMC refusing to take action

My name is Buhle Sikhakhane, I ordered an item with this company it has taken almost three weeks and I still have not received my item when I follow up with the courier they tell me they delivered the parcel which I did not receive, I then lodgee with PMC to tell them I have not receiver the parcel even though courier say they delivered

The response from them is shocking, they say I must go around my neighhood to ask if they receive my parcel, what the hell? I told them ill never do that Im not mad, next the say I must follow up with courier and them to write a letter like whose supposed to go through all that like I must now go through all the trouble, they say they cannot any further steps