Greenstone Shopping Centre parking system nightmare

Greenstone Shopping Centre parking payment system is pathetic. Entry either issues multiple cards or cards than are unreadable. I can't recall a suitable experience since a new parking cards system was introduced some months ago. I have complained both to the marking manager and the shopping Centre manager. No change. They do not understand the problem and are unable to improve the system. In desperation I joined the admyt system which worked twice but now I get stuck trying to leave the parking. Share on you Greenstone and shame on you again. Totally ***********!