What options do I have for taking possession of the condo?

Is the tenant agreement in writing with you?

You can't force the company to provide a letter - do you have a colleague or a manager who will do one for you?

Will I be Guranteed permanent residency..?? How does this work ...? Will the time frame be long for my path to citenship..??

Please note that permanent residency is NEVER guaranteed. You may be able to get a green card if you made a legal entry into the U.S. and are...

Is it possible in someway to reach out to USCIS so that this scenario can be presented to them and to do that anonymously

It's possible - if you think there is immigration fraud going on you can try to report it but there are no guarantees it will even be investigated.

Will I receive trouble if I want to get a US visa with a withdrawn charge on record?

I would just like to add that you may be able to apply for a waiver if necessary - it's called the 212(d)(3) waiver

College

If the college admits the person then the person can go.

Is it possible he will get his appointment before May ?

You can always ask but don't get your hopes up too high.

Will I have to submit support of affidavit for the 1 year old?

The baby is almost certainly a U.S. citizen already.

Tourist visa changing status to student

That should not affect your change of status application.

My i-20 will be terminated? And if i get termainated, i cant get a new i-20 same school right away? Do i have to trasnfer?

From your statements it does not seem that you truly intend to pursue education in the U.S.