Poor service

My husband and I purchased a mini projector from them. It was told every was working. Was given a 3month warranty on it. We need something to watch movies cause of our kids plus due to load shedding our tv got damaged. To it home the USB wasnt reading, we couldn't contact our phones plus we couldn't contact it to our PC now what's the use having it. So we took it back remember it was our very first time purchasing something from them . The guy at the shop tells us he cant do anything from his side we have to go to another shop of his to get the device checked by his I.t guy. This is honestly poor service. Tayob technologies at trade route mall should up they game a little especially when a customer spends his last money at your store