wrongly charged me and didnt want to admit their mistake

I opened account at Edgars ( Edgars Active) I then bought clothes same day and the total was close to R500 , now they send me messages saying I signed up for insurance that i know nothing about , all i did was to open an account and I specifically told the sales person that i dont want any policies or magazines now I owe more than R200 extra for insurance policy that i said i dont want on my account , I went to Edgars active at Auckland Park Campus Square store where I opened my account i received a very bad attitude from their sales person they didnt even eant to close my account as i dont want anything to do with edgars, very rude ,no customer service on top of that i had to pay for insurance tht I clearly said i donot want . they must pay me back my money because i stated when opening the account that i dont want insurance regradless they still signed up my name of the insurance . their sales person Sipho May ********** clerly failed me as a customer with a bad rude attitude