Samsung A5

i claimed for a phone at Vodacom woodmead retail park on the 3rd of March 2015 and after 2 weeks my samsung A5 screen went black and i took it in at Vodacom and i was told to take it in for repairs,bare in mind the phone is not even a month old,now the phone did the same malfunction and it fell down with a small crack and gave me the same screen black out,i am so fustrated as they told me to take it in for repairs but my issue is here that i should have been given a new phone from the first time the phone started acting up and i am not willing to fix a phone that is not even 2 months old but already has so many problems,please advice on how i can deal with this matter.<br> <br> from Tumi Mo***eng