Horrific service & broken device

<p>I purchased a Samsung S7 device in the month of June , The phone switches off ccontinously .</p> <p>further to that the sim card tray broke in the phone .</p> <p> </p> <p>I sent it in to Samsung to have it fixed ,it came back in worst condition .</p> <p>It came with no sim card tray ,how do I use the phone with no sim card tray ?????</p> <p>It still switches off .</p> <p> </p> <p>This is horrible service , I am extremly dissapointed in Samsung and the quality of its devices .</p> <p>This is a fairly new contract . I never enjoyed having the device .</p> <p> </p> <p>I would like samsung to fetch my phone and have it fixed like yesterday .</p>