They won't close my account

I had the worst experience with Totalsport store in Johannesburg CBD, I went to the store to pay and close my account, I was advised by the rude lady who is supposedly the manager that it takes 48 hours she then said I should give her the store card and she will close the account she didn't give me confirmation of call the center to close my account. I went there a week after to check and she told me it was closed without even asking for my ID. Month later and I am still receiving emails from Totalsport staying my account is still active, now this makes me so angry because the more credit this company is offering the more my credit score is being affected. When I went to address her for the 3rd time she told me they are offline, I mean is this how things work with TFG companies? Are their managers trained to disrespect and mistreat consumers.