Teeth extracted full denture fitted and remade due to dentists error 6 relines in twelve months still can't bite ? Face looks very old I know they are not right?

Permanent dentures are not made right away because the bone of your jaw shrinks. Generally temporary ones are made and are used for up to a year. If the visits are all part of the fee you paid, all you can do is keep going back to the dentist who fitted them.