I share your anxiety and agony and mental stress. I also have experienced difficulties you are facing. Nonpayment of regular salary is very common nowadays and this is no excuse that you should tolerate such exploitation. Having served so many years and now pushed to face such situation is hard time. As an outsider, I can suggest, you have only two options -
i) To have patience and continue here hoping for the best to happen as others might do;
ii) Raise a dispute in appropriate forum and drag the admin to legal scrutiny to have your just remedy.
One more is, issue a legal notice to your admin that you are forced to quit because there is a breach of contractual obligations such as non payment of salary, failure to issue salary slips and demanding immediate settlement of F & F with clean Relieving letter etc., if you can afford and withstand the time and loss of salary till you get into alternate employment/earnings.
Have courage and be sensible.
8th November 2018 From India, Bangalore