Samsung A5

I am soooo ****ed off with this Samsung A5 quality it has already been to repairs twice and now it just plays music on its own and switches off when i insert my earphones,i sent Siyabong Skosana an email as i was told if the device gives me problems i must send them an email and i will be given a new one,i know Vodacom Woodmead wont be much help as i will be told to take it in for repairs and i think the Samsung A5 is just a ****py phone,Samsung needs to go back to the drawing board.