Is it legal for a tow truck to enter the property if the landlord is present and forbids it?

You would need to provide more information for a good opinion. Keep in mind its a duplex... so someone else has rights too, and most civil law...

Abandon Property?

You should speak directly to an attny before taking any action. In general when property has been abandon no one has ownership rights until until...

Can my ex send his brothers to take his belongings?

If he is still a legal tenant he can exercise these rights as a tenant can... allows guests, etc. Unless there is a provision in the agreement...

You are still a tenant (monthly) and are entitled to proper notice to end the agreement (30 days notice).

If no contract was signed only a receipt can I get my security deposit back or does an have right to keep half never moved in

Depending on the agreement the landlord may have cause to retain some or all of the deposit as damages. You may want to directly consult an attny.

What are my options for my landlord not making an effort to correctly fix my ac. ive been having this issue the last 3 summers.

For issues that the landlord is required to address under lease/law, if you have done your part correctly and they have failed to properly address...

How can I break my lease legally because of a roach infestation?

Roaches are a health and safety issue. You can address this through proper/legal maintainance request process and if they fail to address/remedy...

Ok I want to move out of my house at beg of Sept my lease ends October 31st?

Not seeing a question here... Generally if you break the terms of your lease agreement the landlord can hold you to the end of the term and seek...

Can I kick him out or must I evict?

Because it is likely that he could legally claim that he is a tenant under the law, you would be required to follow the process for eviction.

Am I legally bound to transfer apartments if I don't like the new lease?

Generally no unless they can show that there was aleady a new agreement that finalized. If you did not sign a new lease with lease things in it, it...