Dstv price lock incorrect billing

I signed up for price lock in August 2018 so that I can save on the annual increases etc. Things were going well up until end of August multichoice billed me double the amount their deducted every month. I called their call center and one of the agents told me to reverse the transaction and pay the normal monthly price locks installment after doing that my services were suspended. I called again multiple time no one could help they always refer me to the price lock department. One of the agents Noluthando gave me a price lock landline *** that is no longer in use. After calling the call center again finally a female agent gave me a email address for price queries ***. I emailed my query to them on 11 September 2019 and I received a auto reply with a reference number *** with a promise that my query will be resolved within 24 hours and today is the 15th of September no one has called to assist me with this query. This is so frustrating because they keep suspending my services nd it looks this "price lock department" does not exist and they promised that a price lock agent would call me within 12 hours but I haven't received a call to this day.