small guava tree

My tree is in danger, it was strengthened yesterday and today, it is down again. Years ago I bought a small guava tree, it cost me and for years I have taken care of it daily, however it has suffered several attacks and someone debarks it with a knife, removes the bark, it was saved once but...

Years ago I bought a small guava tree, it cost me and for years I have taken care of it daily, however it has suffered several attacks and someone debarks it with a knife, removes the bark, it was saved once but today it happened again. I saw him down. I hope nothing bad happens to my tree. God...