Parcel not received

Hi my nam is Nkosikhona Mpisana I asked The courier guy to fetch my parcel at Handy Garments (Pretoria) to Durban on the 30th of April and I was promised that my parcel will arrive on the 6th to 7th of May but I received an email on the 5th saying that my parcel was delivered and but I didn’t receive anything and no one asked me for the password or give me a call and now there are insisting that it was delivered to me