Iphone 6 screen clicking

hello i had recently purchased an iphone 6 16gb gold March 25 i after opening it i had noticed a clicking sound near the left side of the home button i had went back to the store where i purchased at march30th and explained the problem they happily replaced it no questions asked a month later today that phone also started doing the same problem near the lock button i went back to the store they had told my that the 14 day purchase period is over and the warrenty is now covered by idigital an apple authorized seller so i went there (this is two hours after the clicking started) i had explained the problem and told them i had the same problem with the perivous iphone they took it for 5minutes and opened it they claimed they fixed it i havent even reached the door of the store and the clicking started again so i went back said its doing it again so they said theyll have to take it for 10days to check it But they will not replace it i had told them that i read on apples site that alot of people are Experiencing this issue and got it replaced but suddelny their story Changed claiming all iphones are like this so i asked him if he owns an iphone i checked his and it didnt do that sound i had also Checked all the iphones

in the store before my turn came so then they said this problem does not effect how the phone works thus i should not have it replaced i refused i paid the full price in cash and i got the receipt the phone is barely a month old i should not have a damaged device then they had told me i should leave the store i had told him that im going on a vacation and i need My phone he had asked where i was going to so i said turkey he suggested that i should get my iphone replaced at an apple store there i refused and said you might as well replace it now i had gotten a damaged one before this isnt my fault he refused so i left he was very rude i went back to the store where i purchased it and explained to them what happened they where quite suprised how i was treated so they decided to take my phone and try to repair im very dissponited how i was treated i felt i was being rippedoff i had never recived a Broken apple product and felt powerless when they refused to help me im 17 so i had to work hard to purchase it i do plan to sue them if do not replace it

im just hoping this will catch the eye at someone at apple hopefully they"ll help or replace it