VODACOM TRYING TO CON ME

So i got a contract with vodacom and i was paying about R390 per month including insurance, lockdown happened and i called them to let them know everything was fine, then i got back to work and called them to make arrangements and stop the R29 auto data top up and they said they couldn't assist me in stopping those until i am done paying my arrears which was fine, this was 7th October 2020, so I decided in order for me to not use these auto top up minutes and data let me rather park the sim and not use it until i am done with my arrears so i was expecting my balance to have R390 addition as i have not used my initial data and minutes that come with the contract so obviously i did not have any auto top up, to my surprise my bill comes back showing my payment of R1200 in Sept and an addition of R1384 which i do not know, as i have not used their sim card since 7th October it was already in my purse and i haven't used it since, i have sent emails and they are ignoring me, tried to call and i keep being transferred from one person to another without any explaination of where the 1384 comes from, when i emailed them to make payment arrangements they responded within 30 minutes now that i am querying this riduculous amount i know nothing about, my emails are not being responded to, i have heard people complaining about being conned by these service providerers not in a million years did i think it would happen to me,