You’ve experienced a known bug that is actively being worked on by Inflexion; at least that might be some consolation despite it happening and how much it sucks.
If this is an official server: Official Servers - Terms of conduct, guidelines and procedures
I suggest you read it from beginning to end.
If you’re in Singleplayer spawn what you lost in.
If you’re on a private server consider speaking with the Admin for options.
Anyway, what did you purchase from the Bazaar that is irreplaceable on your own?