*********** on warranty and product exchange!!!!!

I was gifted a gaming mouse in December of 2014 that was purchased from the Woodmead branch this past December I phoned with the regards to a product exchange. I was told that I did not need a invoice as their system will have a record. The person I spoke with at WM said that he would get an invoice and get back to me. A month has gone by and nothing. After phoning again he claims that he \tried"emailing me.... I also went to Boksburgs branch as another employee of WM branch told me to go to the nearest branch and tell them my issue. A lady there managed to track down 2 invoices with the product"