You must go to the meeting, but you have the right to ask someone to go with you if you believe the meeting may result in discipline. This right to representation is called "Weingarten rights." It covers all employees, with a few exceptions. Have a union representative (if applicable) or a coworker attend the meeting to give you support and help explain your side of the issues.
An additional 13 weeks of extended benefits may be available during times of high unemployment. Some states pay up to 7 more weeks (20 weeks maximum) of extended benefits during periods of extremely high unemployment.
State laws prohibit blacklisting. It can be difficult to prove an employer blacklisted you. If you can prove it, you may get punitive damages, which is a money award designed to punish your employer. You may want to contact an experienced employment law attorney to discuss your situation.
The vast majority of employees in the US are "at will" employees. Such employment may be ended by either party, without notice, and for any reason so long as the reason isn't illegal.
You should be suspicious if you weren't told the reason for your termination. If this happens, you should consider talking to an attorney.
Generally, you're eligible for unemployment compensation if you were dismissed for any reason other than for misconduct. If you leave voluntarily, you aren't eligible unless you leave for "good cause." Quitting work because you are sick or because your paychecks bounce are examples of quitting a job for good cause.
An employer doesn't need to give a reason for termination of an "at will" employee, as long as the termination isn't unlawful or discriminatory (based on age, gender, race, religion, national origin or disability). Termination can be due to a merger, workforce reduction, change in company direction and business focus, poor company performance, or any number of other legitimate reasons.
An employment law attorney can help you determine whether your particular situation fits the promissory estoppel mold.
Probationary employees can normally be discharged at any time within the probationary period with no right to appeal or "fight" the termination. Normally there's no entitlement or "right" to continued employment, even in the civil service arena.
If the regular payday for the last pay period you worked has passed and you haven't been paid, contact the Department of Labor's Wage and Hour Division or your state labor department.