I FEEL THAT I HAVE BEEN ****MED

I bought a HiSense U962 from Foschini Vangate Mall, Cape Town, cash at end January 2018, before a month went by the phone was malfunctioning. I returned it, waited a month and no report came with except that they had done a software upgrade, I had to let the assistant call them for a reason. About 10 days later the phone does the same and I returned it, now insisting that I want my purchase reimbursed as I did not have faith in the phone any longer. However, since I had lost the earphones, they did not want to accept it. I told them I could buy others but needed their assistance in sourcing alternatively I do not mind if they deducted the amount from the price of the phone. This request was flatly refused. I am still having the same issues with the phone. I cannot do anything with the phone, it closes apps randomly. I DO NOT LIKE THIS PHONE and FEEL THAT I HAVE BEEN ****MED!!! I know of, at least one other person who had the same issues with this phone.