Dis honest and poor service

I have been experiencing my air time loss within minutes after having loaded it for the past 3 weeks as result I have lost business clients and purchasing air time every day was a strain on my budget. Even after having complained to Mtn I was not given any advice or help as to were or what happen to my air time. Mtn has very poor customer care dishonest advice given and forever when u ask for advice you get referred to wrong departments. 700 of contract air time is loss every month and no consultant in customer care responds to complains efficiently and honestly. Very disappointed customer I have money and business loss. My contract is business contract I do not wish any other customer to have this experience.