Poor customer service

I completed the discovery run series(4 races) last year. I was supposed to get 50% back on my entry fee, after completion of the races,I did not get my 50% cash back. This year I completed another another race,the Rhythm Run,again I suppose to get 50% cash back on the entry fee after completion of the race,but still nothing. I did not get my gym booster for the month of June 2019. I called discovery about all the three issues over three weeks ago,I spoke to Dineo,she couldn’t help me and kept on emphasizing that discovery paid my 4 series cash back but “she cannot send me proof” which doesn’t make sense because a proof is all I need. The rhythm run I’m been told to send proof of completion which again doesn’t make sense because discovery allocated me bonus points for completing the race. As for the June gym booster,no answer has been given.