poor service

On 2015/05/05 I paid R400 towards my account (a/c no.***) at Jet, shop no 3Town Square the receipt showed the balance of R564.45. On 2015/06/09 I paid R400 hoping that my balance will be R164.45 the balance was R464.87. Today (2015/07/01) I went to Jet Mart at Station Rd I tabled my problem I was referred me to Mr Simvu Yelle. Mr Yelle instructed the teller what to do . I explained to him that I want to cancel whatever is added into my account. I do not remember having an agreement with the shop to add other charges like club fee into my account. Mr Yelle took my Jet card and ask me to follow him I did, without explaining anything to me. He went to another counter and picked up the phone no word nothing. He dialed the number if he did, what I know is that I stood close to him without being informed. I said if he dialed the number because I waited for 30mins without him talking over the phone by that time it was 14:20 he started to talk at 14:40, he did not offer me a chair to sit he was just impossible. I stand there for an hour, he was dragging his feet. He did not finish to assist me on mobile connection. I hav'nt received airtime but I was charged.