Bad customer service Sasol rewards

Having a sasol rewards card fpr over 4years, card registered with a company Cell, I was retrenched, have called 4 times to have my nr changed, over last month, no one can assist, each consultant says nr wasn't changed and I should wait 24 to 48hrs and try use card. Never get the sms or pins to use the card they blame the fact that I have a dual sim Can transfer the money to a new card because you can only register 1 identity nr, they cannot call back and the attitude is so lax, no one cares, even when escalated to Management there is no one who contacts you back, and they refuse to put you through to anyone in Management. Shocking service for a fantastic group Will not be using Sasol any longer