Wesbank poor customer service and robbing people

What a stressful experience I am having with Wesbank. I have canceled a warranty booster with a third party since January 2019, Wesbank got paid a pro-rata refund for paying in advance for that warranty, capital reduction was done in my account but Wesbank was still charging me for that warranty booster in my installment. I only found out about it in December 2020 then for the second time in January Wesbank sent me an email of a second cancelation of the warranty and charge R3000 for cancelation fees. Is this not robbing me!!!! Since January I have been dealing with Wesbank no efficient response on my query. How can you canceled a policy twice??? Where is that money I was charged in my installment since 2019 to January 2021? Please stay away from this ******** organization called Wesbank