Highly Dissapointed in Shein/Buffalo International Logistics

I am appalled at how long my Shein order has taken and the lack of contact between the couriers. It has been a month and I was advised my parcel was delayed and to please be patient. Then I receive an email saying my parcel has been delivered and signed for? *** NO IT WAS NOT. Nothing was delivered and NO-ONE even tried to call or contact me via the details I had provided. I called Buffalo and was advised that on their end it was delivered so I explained that I want to know who the driver was and where exactly they dropped the parcel off at, as it was not! We confirmed my address and contact details and they were correct-so why the issue?? I was advised that the matter will be escalated. Called back 24 hours later and was advised by someone else that the parcel was not delivered there was actually a problem with scanning the parcel, and now it is with SkyNet? How does it just change couriers without any notification to the client?? I reached out to Skynet and the tracking number given is having errors so no feedback can be given at this time. (Again ***). I want to know where my order is, and I want my order! Please assist me in finding out what is happening and rectify this issue immediately!