HELP my cat is a zombie what do i do?

My cat died last week and I saw a shooting star and wished it would come back to life. Then it dug itself out of it's shoebox/grave, and won't eat any cat food but the neighbors say it's eating their animals. Someone said to cremate it so the vet did, but we kept the ashes and now the ashes are walking around like a zombie and all the neighbors pets are gone!!! QUICK HELP what do we do????