Bad customer service

Hi, i've bought a leap s1 smart box last month. I could not get the box connected with the internet cable and couldn't download other apps except for those already on the box. I tried using chrome cast function but still my device could not connect. I went back to the store within the first week of purchase and the salesman explained what i should do,but thqt attempt also failed. I took the box back last week because it is under warranty. A salesman assisted me and he could also not determine what the problem was. His conclusion was that the box is not compatible with any of my devices and that my only solution is to sell it and buy another one which is compatible. This was not the service i expected,very unprofessional and it seems like the salesman does not have any technical experience himself. I am very unhappy because i paid R1200 for a smart box that is useless to me except for the apps that is already on it.