DSTV Multichoice are dishonest and not treating their elderly customers with respect

My elderly mother-in-law contacted Multichoice DSTV, to get the 65+ year old 5% discount they advertise. She was told everything was flagged on her account, she would see the discount the following month. This never happened, they played the old lady. I then got involved trying to assist the elderly lady. I spent hours on the telephone with DSTV, going through all the departments consumer sales, buss sales, retensions, rewards etc. most had no idea of the discount for pensioners. Eventually I was told to go to my closest DSTV agency and they would assist me. Following day, I was off in my car to the agency only to be informed the elderly lady could only get the discount if she signed up on the rewards programme on the App 3 years ago. I explained to the agency that she is in her late 70s and wouldn't know how to download the APP. She has been with DSTV for +45years this is not how you treat a loyal customer. T&Cs say she is eligible??? https://www.dstv.com/en-za/legal/terms-conditions/rewards/65-reward-tcs/ DSTV do you not have enough negative publicity???