Is a commercial landlord responsible to pay back the deposit if the landlord bought the property after the lease was signed?

Subsequent landlord must address your deposit. Send a demand letter if the amount warrants it.

How can I fight this? Is this legal? If there is a ticket that I wasn't aware of, can they continue to accrue charges?

Pay the tickets and move on. The defense of not knowing about tickets is difficult to prove.

In 15 years of practice I've not had one client who could prove the damages element to slander. Good luck.

Hire counsel and let them go to work for you.

Can a minor even legally enter the "no refunds" contract?

Somewhat different than a contract. Even minors can make purchases. The stores refund policy will likely prevail.

Ask an experienced criminal attorney if that charge and conviction is one that can be expunged in your state. If not yet convicted hire counsel and...

If the trust was properly funded with the real property the trust already owns it and the trustee shall follow the terms of the trust.

How do I cancel a power of attorney?

Easy. Create another terminating the previous document and provide notice to your former attorney in fact.

In above situation how will i have same rights as my partner and how can i be assured that he cant sale business without my know

If you do not have a membership in the LLC now the "partner" can do what he wants with his company.

No wriiten lease -how to evict/terminate tenancy?

A month to month tenancy may be terminated upon thirty day written notice.