JET POOR SERVICE

I experienced a bad service from the Store Manager. I wanted to exchange an item which was bought for me as a gift. First she tells me that the kind of item cannot be returned when I asked why?? She said it's stated on the return policy of which I asked her to state the clause that state so she failed because she was telling me the incorrect information. According to my understanding I can exchange if the item is in its original packaging & cannot get cash becouse I dont have the slip. She then tells me that I need to call the person who bought me the gift and ask them to tell me which store they bought the item of which I find that rude having to ask that question. She then further claims that I have a counterfeit item and tells me that jet good are being sold all over & tells me about her store shrinkage which I dont understand how that information is relevent to me and as a Store Manager she has made her own rules not to exchange items with no proof of payment. I then request that she put me on the line to speak to Head Office she tells me that she doesn't what because that is an expense to her store and its costing her store and that the cost are being deducted from her salary. I was very much disappointed by the service and the way she handled the matter taking into consideration that she is a Store Manager who lacked information and cannot take an extramile to ensure a good customer service is rendered.