Needing help with gardening and cleaning does not qualify you for Attendance Allowance as it is based our your personal needs, but once awarded, you are free to spend the money on paying for a cleaner or a gardener or however you wish.
If you were not happy with what was written on your claim form, why did you sign it as correct?
Without knowing more about your health and well- being, it is impossible for us to know whether you were entitled to AA.
I would suggest having another word with AgeUk and discuss your dilemma with them, but the person who helped you should have gone through the form with you and completed it accurately and you should have checked it before signing and sending it. Sorry to sound harsh.