Vodacom Insurance messing me around

Very dissapointed in Vodacom insurance, after losing my phone, i am given the run around to try and find my invoice for the purchase of the phone I am insured for as they do not have the insured device on there system. It is hard enough losing your phone and all the related info and waisting my whole morning reporting it ******, to now be told that there is nothing they can do if i do not have an invoice of the phone i am claiming for. I told the person that surely when i did the insurance i stated the phone that is to be insured, but she saids unfortunately it is not updated. I have had a very bad year so far with Vodacom service. I want this sorted out or i will cancel all my contracts and move MTN. this is so frustrating!!!