if you moved from a non freezing climate, you probably had mostly water if not all water in the rad.... which means a jug of 50/50 probably isn't going to give you anywhere close to 50/50 mix in your system... more like 70/30 at a guess.... My car runs 50/50 here in ottawa winters and we get as cold as that, I've not had coolant freezing issues at all. You also need to check what the lowest temp that coolant can take... I believe there are different ratings available.
Take a breath, calm down, Thaw it out... drain the coolant... fix the rad... put in good stuff. Tons of folks on here should be willing to help.