Days after Resignation!

I was good in academics in my college days as a result I was placed in a good MNC. So I considered myself very lucky for not running around companies to hire me.
How happy I was for having a chance to work in a very reputed company. But what a folly!!! Everything was good till this recession came into picture. From 2006 to Jan 2009 I was in a good project with lot of good on sites and other good opportunities. But in Jan 2009 my project got over and then started my bench life.
From that month I was neither given any good opportunities nor any promotion/projects. On the top of that i was given to work on the worst technology and worst clients following ad hock standards(?) ..frustration started creeping in.

I started looking out for better jobs.I got offer letters from giant competitors in around September end. I was very proud of me. See the difference ..from Jan to October. Getting another offers was not piece of cake for me...certainly not. I tried very hard to succeed.

Now the time had come for resigning. I resigned from my current employer saying that I have been offered better roles and pay. My seniors obviously tried hard to repel me from my decision..but the decision was taken after considering all possibilities. so there was no turning back. Now from here started the mental torture. I want Release as early as possible. My company is not willing to give that as I am in project and doing that will create a bad image of my company in front of the client.(what crap !!) Now this is very bad. I don't understand this..why PMs have to behave in this way. I am not a critical employee in my project , my training has not started yet ,in this condition when I submit resignation any alternate resource can be interviewed (many are on bench now) and my opportunity could be handed over to that person. But somehow this is not happening.
I have been made to stop here for just sake of torturing me !! I am so angry and so want to run from here. All atmosphere here is so frustrating.I am just praying that the new opportunity stays with me ...and somehow I get released from my present employer soon.