poor quality, and bad service

I bought a Premio Tablet in July 2017 at Ackermans, in November 2017 there was a problem with the application and I took it back, i got back the Premio Tablet in January2018 from repairs, Today March 2018 the same Tablet doesn't charge and doesn't swith on and now the manager at jabulani mall by the name of Benny refuses to refund me he says he is gonna book it for repairs even though I told him that I bought the Tablet for my daughter to use at school, so while other kids use their Tablets my daughter will be folding her arms... now I know not to buy any Premio product and I know that Ackermans has got such a bad service.