Sorry to hear that. Hopefully people learn from this. A snake should not be bought unless you are experienced with feeding newborns. It can be hard to get them started eatting.

Also if a snake isn't eatting just trying a whole bunch of different methods can just put it off food even more. Most people tend to get too worried too fast when their snake isn't eatting and they over due trying to feed it and that just makes it not want to eat even more.

Just know this isn't your fault. If it hadn't eatten before it shouldn't have even been sold to you.