British Expats - Employer Reference - Washington DC

Hi,
I am a third country national (from India) currently working in US and applied for Australian Skilled migration (IT) at the Washington processing post. I have worked for 4 companies out of which one is a US company (dot com failure) and other is a 3 people owned company (whose boss is now my bitter enemy) in India.

1) If the consulate tries to contact the US company, the phone nos. are discontinued now and email mentioned in the reference letter will bounce back as it no longer exists.

2) In the case of this 3 people owned company, the contact person metioned in the reference letter is not there anymore and the direct phone no. mentioned is now the phone no. of the guy who is my bitter enemy who would definetely say if contacted by the Australian embassy that I have not worked there at all.

How will the above two have an affect on my application? Is the embassy particular about checking and validation each and every employer reference. Please share your experiences as I am very much tensed.