Online order not received

On the 2nd of August I placed an order for A microwave and a hard drive online. On the 14th only the microwave was delivered, At that time I was already annoyed as the purchase was supposed to be delivered within 3 to 5 working days. I then contacted the courier company and asked them where my hard drive was, they informed me that they only received one parcel and I must check the waybill as only one item was annotated. I then contacted Game support and was advised that they would investigate and come back to me. It is now a month later and no feedback and no hard drive.How long does this investigation take. Surely it cant be that hard. I am sure by contacting the despatch department to confirm that the item was handed over to the courier or not, and from there see where the problem lies.