S7 edge frozen, nothing working at all

A

AC Question

Had my S7 edge 2 days, a dual sim model sourced from HK, and it has just frozen up, wont switch on, the screen shows the time when it packed up (time is also frozen), with 81% battery showing. Didnt know when I ordered it that it was coming from Hong Kong, or that as it was imported there was no manufacturers warranty with it. Not overly confident that the response from the supplier is going to come to much (eglobalcentral.co.uk), dont know if it is a bit naughty mentioning that name but feel free to delete it moderators.
stuck between a rock and a hard place with this one, lot of money to throw away. I wasnt trying to be a cheap charley sourcing the phone from abroad, but having a dual sim makes a big difference to me.
Any hope from you kind people in the know?