First of all, to my knowledge, the authorities do not issue such visas to people who have crossed the 60 years age limit.
Second, my advice to you is not to go through "agents" for such jobs. They will charge you heavily assuring you they will get you the visa within a couple of weeks. But you will keep running after them for months on end. Finally, the result will be no visa. Whether they will refund you your money, it's another matter.