Mr. Sudhir Kumar has been helping querists on PF matters with his outstanding knowledge on such matters. Upfront reply of Mr. Sudhir Kumar is appreciable.
It is a bitter fact that many times the complaint is just a piece of paper and at times not even worth the paper on which it is written.
Although you would like to submit the formal complaint under proper acknowledgment and also ask the actions taken so far from the date of first default .................................up to till date....................by EPFO against such employer that has been defaulting on deposit of payment of contributions , name of Official of EPFO that was deputed and inquiry report, current status, action taken..........................................If required persue RTI route too.
It is suggested that you may follow the advise of Mr. Sudhir Kumar and take steps suggested to you and structure your representation and complaints as suggested by Mr. Sudhir Kumar for bets results.