choice of pension payout

I have a pension from a job that I had in the early 90's. At age 65, I became elgible to receive this fund. Last year, I was contacted and asked to provide information, which I did. This year I was contacted again and was asked to provide the same information and once again, did so. I received several forms that was attached to a non refund annuity, through research, I found this plan,was best for the insurance company. I did sign any of the forms but was told by an employee of the company that I would receive further information-the total pension amount and possible plan flexibility, which did not seem to be in the proper order. Am I missing something or is this both standard and legal.

Thank you!