No reply to my query of 4th Jan

I recently had a problem getting a credit passed for incorrect billing for 2 months. Some of the problem has been solved but my 2 further queries have been ignored. The Promo service was credited but i am still querying the fee charged for My-MTN choice. I see I have been charged R613.16 when I was under the impression that the monthly contract fee was R469. Please may I have some clarity as a matter of urgency.