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Welcome to Justanswer.com, my name is Dustin.I'm sorry to hear about the issue you are having, I will do my best to help you resolve it.
The case you had in, was it with our company, Justanswer.com? Or was it with another company?
Also, if you put your mouse cursor at the top of the screen where the menu bar should be and leave it there, does the menu bar show up?