Default lg problem

so... i had a little dust underneath my screen and there was some space between screen and housing of my phone (sorry didnt know how to say case from phone so i said housing) . so i send my phone to lg and i have to pay 375 euro.... and my screen isnt even damaged so if u ever have a broken button or gap in the housing of the phone be prepared to pay 300+ ;/ waited a week for nothing and have to pay 40 euro for sending my phone and getting it back :/