No help with significant issue even from managemen

Ive been trying to blacklist my cellphone since Sunday. I have called in on Monday, Tuesday and today with nobody being able to help me. I asked to be contacted by someone in authority last night and today but management refuse to take calls and to return them. I spoke with Gideon last night who is apparently a manager and he advised that I can call today to get my listing number in order to report this issue and get a case number. Today I get told they had incorrect information and it still has not been processed. I have requested Thato, the manager on duty to call me back but have not heard from her. all the while I am sitting without a phone and all my information on my ****** phone is still accessible. You wait in the queue for 15 minutes only to get your call dropped by an agent at least 3 times before you get through to an *********** person who cannot assist you but cant get anyone to assist you either. 2 cellphone contracts on the verge of being cancelled. Appalling service!!!