Ridiculous service

I have been buying 100GB for over a year with R229 and each month it will expire when I still have 50GB, for the past 2 months the same 100GB expire within 14 days and I must recharge again at a price of R399. I use my work DATA from Monday to Friday from 7am to 4:30pm. This means now I buy 200GB for R800. This is ridiculous.