Don't argue with TELUS, you should contact Samsung using your Warranty. TELUS only make their network better and they don't make phone, so TELUS doen't know why the WIFI doesn't work.
Nothing is wrong with TELUS! Samsung is the one that messed up the phone because they made the phone super skinny and swtich the camera from 16Mp to 12Mp! The only thing is great about the phone is that the software is better than previous android ...