Bought cellphone and it was not working

I was so disappointed with the service I got from Malebo at Flora Centre she is a very rude person who doesn't care about the customers what is important to her was a friend when I tried to explain about the problem with the phone I bought she told me there was nothing wrong with the phone, it looks like I was a fool for taking the phone back but luckily Hopolang came to my rescue and help me