Axxess Pro Rata billing 50GB Promo

Being charged and billed according to the activation date and term it pro rata is fine but not fair I recently got their 50GB Promo package for myself in this scenario I have been a customer of Axess for a few months now and payed on the 1/03/2019, in this instance I also payed in advance for this month March and April an amount of R1080 and made this payment on the 01/03/2019. It stands reasonable with or without pro rata to get receive my full 50GB as it was the beginning of the month dispite pro rata. Please could you escalate my communication was with Faith Bell and Zukisa Ndolwana. If you indeed are billing me according to my activation date which is you say is 05-03-2019 this is due to the courier time to deliver how do you calculate the shortfall of 4 days data as to be 12.90GB ? You are saying in a space of 4 days I will not receive the 12.90 GB because of pro rata billing this term is used loosely and would like to know how you calculate this unfairness? Please could you escalate to management