What the.....?!? sudden increase in my mothly debit order

On 4 September I received an email from DStv South Africa *** informing of the usual “Debit Order Collection Update” and confirming the amount that I was to be debited, viz; 1086.37 instead of the usual 881.10. I responded same day to the same email address with ”I don’t recall have received any form of prior notification of an increase from you in recent months. In fact, I have been under the impression that you announced earlier this year that there would be no increase to Premium this year. Firstly though, is “your” below mail a **** or phishing attempt?” Turns out that it’s not a **** of phishing attempt in that my ban account was debited on 8th with the new amount of 1086.37.I Informed that I was not happy with this situation and that I was under the impression from previous and current media posts that prices were not being increased. No reply from them. Perhaps it is a “no Reply address” although there’s no statement in the email text that states this. Email is my preferred communications medium because of a hearing disability. I need to add that (and I have no option but to disclose this on this public forum) that I am a participant in the DStv-I Panel re monitoring selected viewing patters and for which I get a 10% discount on my monthly debit orders. This discount has not been included in the new pricing. Note also that received a call from a “Dipuo” of Kantor some two weeks ago for the purpose of a periodic check of my details in the i-panel records. She confirmed that my discount would remain in place. Please address. Note that my preferred means of communication is email due to hearing disability. Thank you