They are hiding from you, and not disclosing to you your situation and their situation. This is absolutely unworkable and unacceptable.
I am assuming you are in the United States.
Arrive early at the office and clear out any valuables and documents and personal items that belong to you, as well as documents showing that you are owed wages.
Before going to work write down the facts of your situation, for future reference.
Inquire in person with your supervisor as to whether you will be paid that day, and if not, whether you are being dismissed. If you are not being dismissed, inquire as to how you will work if you are not paid according to the laws of your state.
Assuming you are not paid, and not dismissed, and no agreement has been made to issue you a promise to pay you signed by an officer of the corporation, work until the end of the work day, through the regulatory period the company is required to act to pay you.
Following the failure to pay you at the end of the statutory day, demand that they pay you verbally, and in writing for all wages that are due to you, including vacation time and other benefits due to you.
Indicate in your verbal statement and your letter that the company has failed in its obligations. Indicate that your letter is being copied and sent to the appropriate wages and labor regulatory authority as a demand for pay. Indicate you interpret the actions of the company as a layoff.
Most states have a labor and wages regulatory department.
Example:
California Department of Industrial relations. How to file a wage claim.
http://www.dir.ca.gov/dlse/howtofilewageclaim.htm
In New York, there are both civil and criminal penalties for failure to pay wages. In some jurisdictions, the officers of a company are double or triply liable for failure to pay wages.
Indicate at the end of the day that you interpret the failure to be paid as a layoff. File a claim against the company for failure to follow the law and pay wages.
Find a new job.