Data Bundles and no Answer their phones

I have a concern with Mtn I have been loading 100MB everyday and it gets finished before the day ends. my 1gig data use to last me fore the whole month and now it gets finished in less then a week so i decided to buy data on a weekly basis but to my surprise it gets finished on a daily basis and when I call 808 to enquire about the usage of data no one answers I hold for an hour or 30minutes then they decide to drop the phone on me. this is frustrating and I'm really getting angry because I run a business and I use social media to connect with my clients. The BEST Network for ME right now is CELLC or 8ta. As soon as my contract with Mtn ends I will move to either one of the two. You are exploiting us by the usage of data and this is not fair. Its a pity because you will lose customers because of your greed i have checked with Apple and there is nothing running on the background to quickly finish my data!