Hi, I have three vaults made in order:

Vault 225,

Vault 42,

Vault 666.

I have been on the last one, 666, for the past few months and was unpleasantly surprised to wake up to

Vault 225

Vault 42

and an option to make a NEW VAULT where 666 was.

I was just on it last night, I definitely did not delete it myself.

Is there anyway to get it back?

Mine, also called 666, was there this morning and gone a moment ago. I hope it can be recovered, as I put some actual money into it.