some clients!

what is the point of me proposing a design if the client is gonna to end up changing it totally? but this is exactly whats going on! shits me to tears, not so much due to the design being changed, but simply because the to and fro to and fro emails of amendments after amendments is a simply waste of time. fine, maybe i am a bad designer, maybe i suck at it, but lets face it, if the client has a general idea of what he/she wants, why dun they just tell me exactly what is required and i will simply regurgitate it back to them? pure torture i must say.
she'd say "why dun you move the promo box below the last paragraph?" only to say "ya it does look unbalance now doesn't it?" after i did the changes. her attempts at fixing the problems only serves to make it worse. hello, excuse me but i do have a dateline to meet and as of current state i am BEHIND schedule, understand that being BEHIND also means my ass is at stake.
"oh, i am sorry, i understand it is daunting", well fuck you very much. you design was not hard, it is just that you have got absolutely no idea what you are trying to achieve. and at the end of the day?

" please revert back to your original design "

thanks alot