PRICE LOCK INCORRECT TERM AND DEBIT ORDERS

Good Day It has been about 6 months now that I have waited for feedback on the following

I have been a DSTV customer for about 5 years now , Oct/Nov 2019 I took a pricelock for R749 For 24months pm which was great. September 2019 a debit order of R1152 went off (keep in mind I phoned the customer care of multi choice and spent more than an hour on the line and nobody could explain to me why the amount was that high as they confirmed I did not take out any box office movies ) and from November 2019 my amount to pay was R904 . There was one month between November 2019 and April 2020 where it was also higher . I also enquired with customer care about the term for pricelock with installation and decoder to which they also confirmed that the term is 24 months as they do not have a device inclusive pricelock with the term 12 months . I am still paying R900+ to this day so we can stay connected. Please urgently provide feedback via email as I would like to keep paper trial about this.