Disgusting service from Telkom helpline

Had a problem with updating my profile details on the telkom app. After logging in I clicked on profile. Needed to change my cell number- would NOT give an option on APP to change. Phoned Telkom helpline. After half hour with helper taking me though hopeless options she said I must go into a telkom office to change my cell. I swore at her for her incompetence and put the phone down