Original documents not returned by company

Dear Sir/Madam, I want your important review on below query. I had joined a company last year and left the organisation without serving a notice period which was of 2months. I worked for 10months in that company.The company didn't give the original appointment letter and kept with them only as the term was mentioned of 2years and as it was discussed I didn't wanted to get into any bond, when asked hr she said it is just written but there is no issue you can sign as there is a clause of 2months notice period. Reason for not serving notice period: I joined the company during lockdown with a lesser salary then previous company as I wanted a job which I lost during lockdown. The company atmosphere was not good for employees, company always thinks about there profits and losses. If there is any loss in work company will be billing the employee and will be recovered from staff when leaving the company or from shift allowance even if it is 100rs. As the company was into travel we use to work 24/7 where male worker will get mostly afternoon shift and night shift whereas the shift allowance was not given for months (waiting for debit or error to happen by staff) and they gave finally after 8 9 months which usually we should get in every monthly salary. Notice period is of two months whereas people wait for there fnf for years as hr delays saying boss is out of town boss is busy we need a sign etc. The main reason for waiting is that we deal with airlines and airlines send debit memo after travel is done by passenger it may take 6 months 1 year or more then that, so if a debit memo comes after that period and the staff had worked on that ticket they want to recover money from the staff and once staff is left from whom they will recover the amount so our salary might go on hold for years or even we may not get the fnf also. So fearing this I have not served notice period as 2 months salary means 2 months home expenses for my family due to financial condition I cannot leave that salary. The hr didn't mention anything about original documents to be submitted, they just mentioned we will verify the original documents and give it back, but while joining she kept my origin certificate in her file and said you will get it when you leave the company and don't worry it will be safe with us and you will get a acknowledge for the same. As per them the documents was only for losses if any not for notice period. But immediately after 1 2 days when I asked my certificate back she denied saying it is company policy and many other employees didn't submit saying I lost my original certificate or any other reason, hr took documents from innocent employees only who followed the company policy as per hr. Now after resignation it has been one month and I have informed my situation to my hods but they are also passing the parcel saying someone else will look into it or hr will get back to you etc. What I can do in this case, if I complain can they take action on me.