Standard Bank Tutuwa Share Incentive Scheme

I inherited the Standard bank shares from my late husband who worked for Standard Bank in 2015. This is the Tutuwa Incentive share scheme given to standard bank employees. In October 2021 I received an email stating that if I don't exercise my share option by end of November 2021, my shares will be paid to a charity of their choice. I need those share to be paid out to me but there are not valid contact details or clear communication as to who can assist in selling the shares. Please can Standard Bank Tutuwa Share Incentive Scheme send me someone that can assist in exercising my withdrawal option.