Anyone who worked and lived in Frankfurt with no fluency in German?

Well the people may speak english (even to a perfect level)

in a corporate or finance environment in Frankfurt.

But this does not mean that they will start to talk in english to each

other so you can follow them too ;)

Everyone will talk german (and everything will be written in german only)

Btw. how do you plan to pay your bills?

Because without speaking german how do you know what

lets say the electricity company wants from you when they write you a letter (in german) ? ;)

Well shopping and talking to locals will not be a big problem.

Usually people will help you out and try to talk to you in english.

But again living and working in germany without german?

Hardly possible!

You have to remember EVERYTHING will be in german only.

So all your bills, all the letters you recieve from the city or

government are written in german only,

So how do plan to know if a letter is important (like "This is the last warning before we cut off your electricity" ;) or not if you

can´t read it?

I agreed with Dark you must copped some German!