I brought my 9 months old iphone to the store twic...

I brought my 9 months old iphone to the store twice because of a battery and notification issues ,first time they turn off some setting and second time they just re- installed the software . My phone still has the same issues. Staff couldn t give me any reason why phone is doing this. And the manager named CONNOR was very rude and blunt, he shouldn t be in customer service position.