You can seek this stament from your employer at the year end. It is issued bythe REgional PF Commissioner mentioning therein the detial sof openoing balance, contyributions made by employer and employee and interest earned for the year. No employer is bounded by law to issue this statement sincve it is generated bythe PF office.
PF Balance: Balance can be seen in Annual Statement & you should get Annual Statement of your account from EPFO through your employer.If you are not getting it please write to the employer and PF office, where your account is maintained & send a grievance on the website:EPFO
If no reply is received in a month or so, file RTI application with PF office.
For details please see the blog/s of JPS 50 Sir & Taurus Sir on PF