Airtel — Airtel Kenya credit control department are rude and do not respond to customer issues

I have a postpaid line with Airtel Kenya which has been disconnected due to non payment. In an attempt to resolve this issue, I have sent emails to the official customer care mail and to the credit department. From August to date I have not even received an acknowledgement to my issue.
What makes this even worse is that staff of Airtel Kenya credit department see it fit to send demand notices and threats of third party debt recovery but they will still not have the courtesy to engage with the customer.
To support this claim I have emails from an Aska Gisemba from the credit control department and a Moses G. Mwangi who claims to be 'head of business operations and credit control'. Every time the emails are rude and condescending and everytime they do not have the courtesy to reply back and try to resolve this matter.
I am fed up!