Very dissapointed in post net fleurdal

I took my school assignment for courier and the ladies helping me assured that my package would be received on Thursday before 1pm. Apparently i gave the wrong address they mentioned a funny area i did not even provide, my parcel was not delivered and no one bothered to call on Thursday or Friday even monday the 21st i had to call myself. If i hadn't called when was i going to be told about my assignment? My assignment is very late! Im very angry and disappointed to say the least