I have a claim against me for item not received,I used a tracking number as PayPal only require this as proof of postage? The buyer never even let me know,he just went straight ahead and opened a dispute through PayPal.This is the first time ever that a parcel I have sent hasn't been delivered in 10 years.Aust Post is investigating at the moment,funny but they said why I didn't send it registered post,I said well a tracking service was used so why has it gone missing? no answer to this question yet.The buyer also waited 44 days to file a claim,they should have done this earlier so the parcel might have been found so who knows where it is now,anticipating what the outcome will be.