Passport Office Bangalore — pf amount not credited

Address:	560037
Website:	epf.gov.in

I applied for my pf withdrawal online on 2nd sep 2018. But it didnot get credited stating that account no was wrong. On submitting the details on grievance portal.. I was asked to send the composite claim form (Aadhar) and a cancelled cheque leaf to pf office. I sent all the documents to pf office k r puram, bangalore through registered post. It got delivered to office on 7th nov 2018 when i enquired with the post office. Raised one more grievance on the grievance portal and they mentioned that they did not receive any document.
How many times i need to send the documents so that they can receive it? How to proceed further?

Thank you,
Jayaprakash vijayan