Have you tried another Charger? How old is the battery on your S6? Did you try holding the Volume up-Power-Home buttons and see if you can get it into recovery mode? If you can get it in there try to clear the cache partition then try to reboot the phone from the recovery mode.
I'm sorry to hear about your phone. Having a working phone is very important. kathy65793 asked some great questions. Let's help you figure this out. When did this issue start? What does the screen show anything? Are you using a functioning charger / cable in a known working outlet?
Keep us posted.
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