Points not added after doing annual multipoint che

For the THIRD year in a row I have done my annual Tiger Wheel and Tyre multipoint check and for the THIRD year in a row I have not received any points for this, despite getting an email from Discovery saying that it had been done. They do not reply to emails or to complaints posted on their Facebook Page. I am SICK of chasing Discovery all year long to add points that should be done automatically. I am convinced that their systems are programmed not to do this until a complaint is received.