MTN is pathetic with service

Beginning of the year i was in canal walk mtn purchasing a data sim i was told then already i could data share to my primary number all things were going well till this morning when data finshed so i logged onto the mtn app and purchased a data bundle of 20g day and 20gigs night for R199 after receiving the data i could still not data share i then phoned MTN customer care and spoke to a very nice lady (Dumela) who offered to assist she promised to call me back between 10:00 and 10:30am today still have not received a call back (highly dissatisfied with this service) im unable to work due to this issue the service i am receiving is very poor service and wont recommend Mtn due to there customer care but anyway while on the call with Dumela she told me that the data i bought does not add to data share which i then told her nowhere when purchasing does it state those terms i am highly unsatisfied with that and would like mtn to call me regarding that and fix this issue i do not want my money back i just wanna use that data on my primary number whether its being data shared or if they transfer it to my primary number i would like assistance with this ASAP coz when payment is needed it must be on time but how can i do that when you taking time out of my work schedule due to poor service and non service delivery