My purchase was incorrect as I wanted a Bluetooth mouse to go with my Samsung S6 Lite tablet as well as the light blue case with Bluetooth keypad

My purchase was incorrect as I wanted a Bluetooth mouse to go with my Samsung S6 Lite tablet as well as the light blue case with Bluetooth keypad. Although it mentioned Bluetooth on your adverti*****t it comes with a USB and there isn't provision on my tablet for a USB. I have so far writthen 3 times with full explanation and photos of packaging and mouse showing the USB. I now have to send it back and I'm penalised 15percent covering admin fees. I have got something in my cart but I won't purchase until this situation is properly attended to. Yvonne Hinkins