L1B denied on aug 23rd, but new h1b get effect from oct 1st 2012 with I94

L1B denied on aug 23rd, but new h1b get effect from oct 1st 2012 with I94.

My L1 B visa with I-94 expired on May 31 2012 my company A filed for L1 B extension on May 17 2012.
I received RFE on L1 B extension on May 29 2012 but my RFE response submitted on August 9 2012.

On August 22 2012 L1 B Visa has been denied.

Also my H1B petition filed on June 9 2012 by Company B has been approved on Sept 5 2012 with Change of status.
My I-94 is valid from October 1 2012 to march 2015.

I would like to know can I stay in US between August 23 2012 to October 1 2012?
If not, Please let me know what are the further steps to be taken immediately.