extremely dissapointed customer

On 2015 /03/01 i upgraded at said branch from blackerry to a samsung s4 mini. About a week later i started to notice that the battery was draining fast. A full charge would mot last me a day. I kept using it. On the 14th of march i went back to the same branch. I spoke to a person called busani. I did explain the situation to him. After i stood there for about 20 minutes whereby no one else even asked me if i required any assistance. Eventually i spoke to bosani<br> Eventually i did speak to busani. He said because the phone is older than 7 days they cannot replace the battery. They would have to send the phone in for the battery to be checked and that i could not have a loan phone. What would i use for the duration that i do not have a cellphone. Not everyone has more than 1 cellphone. I find this very unhelpfull and very dissapointed. csn somebode please help or must i take my business somewhere else?