I was going to return my S7 because it's overheating and battery not good. See US is recalling NOTE

[AC Question]

I think I want a different phone. Somebody was supposed to check service in my area because it's terrible. It's been MY 30 days and part of reason for exchanging was lousy service area. Asked again when returning my SECOND phone on Friday. Was worried about fire due to overheating but now worried about explosions?! Why is CANADA recalling S7 but we are not? What can I do about it? Store guy said overheating because is made of glass and I should get a case for it? Others are plastic?