No response and useless service!

I have a Galaxy Note 4 that was dropped and the screen broke, I was told there is a free repair if I dropped it off at Samsung in Century City last week Saturday the 29th of February. I got a call on tuesdau last week saying that the screen has been replaced, but all of a sudden one of the buttons is not working and now they will send a quote before repairing it. <br> <br> Firstly, I do not see why I should pay a cent, as the phone was checked before being handed in and there was no mention of a button being broken. You cannot take a phone, something breaks while its in your care and then expect me to pay? Surely not.<br> <br> Secondly, I have not even received the damn quote after almost a week! Trying to get hold of the numbers that were given to me has been fruitless. Please sort this out as soon as possible.