Wozblaster on back order

Hi! I ordered a Wozblaster from msxcalamar.com in the beginning of May - no problem with order nor payment. Then I get a mail in the beginning of June saying it’s on back order and then silence. According to their website back orders should have been shipped in July (still says so). I mailed two weeks ago asking for status but no answer as of today. Has anyone here ordered a Wozblaster recently and received it? Should I be worried or just continue to wait patiently (anyone with information about this please inform )?