Buffalo Logistics negligence

I bought goods from an international store and Buffalo Logistics received the parcel, which they were meant to deliver. For reasons unbeknownst to me, the parcel has been handed over to Fastway Couriers, and has since failed to arrive to me- it's been a little over two weeks since I have been meant to receive my parcel, but nothing. I am holding Buffallo Logistics accountable because I am of the opinion that they should have facilitated everything- from the point the parcel was handed over to a secondary company, to ensuring that the parcel arrived in due course, to its owner. I am dissatisfied and hope and pray that in future, I never have to get my items via them!