poor service

I placed order on line last month with the payment, when I track the.status of the order on-line it went from order processing to order dispatched and then order cancelled contact customer service for assistance, i then contacted customer service hoping to get assistance but the lady literally told me she don't what happened maybe is the system error or someone cancelled or out Of stock, I then asked why would someone cancel my order without my permission and the your website is designed in such way to not let us customers to order something which is out of stock and if is the system error then is not the problem on my side because I managed to place the successfully and made the payment I was expecting someone to at least help me on getting the order or my refund but she hanged up on me