Damaged Cellphone Upgrade - Bad Service

I am so horrid yet disheartened with Vodacom's service. First of - I upgraded to a Huawei P8 two days ago - which in turn does not charge nor is recognised on any other usb port. Please note that the phone had barely 24 hours being purchased and instead of the store Manager replacing the phone, he tells me that he needs an approval which would take 5 - 7 working days - this means (as per the consultant, Vodacom mistakenly providing me with a replacement that the store would have to pay). No#1 The phone was used by the consultant to transfer data to my old phone - and instead of him using the Huawei's usb cable, he used the store's usb cable (which was not Huawei's product). When I got home to charge my new phone, it was not working. When I brought it back the following day, The store manager was very dismissive and had a bad attitude. Kindly note the consultant that assisted me with the upgrade and the one who transferred data were aware of the issue at hand (what occurred with my phone). The consultant repeatedly told me of the 7 day return policy but please understand that the damage and the timing of the situation is not my fault yet it falls on my time and money.