Mr price mobile daylight *******

I bought my cellphone about a year ago at mr price mobile. They have informed me that i need to pay R130.00 data in order for me to buy a phone on installment i told them from the out set that I don't need air time and data contract from them i only need cellphone from them. however they preceeded on charging me on my monthly payment without my authority. Subsequently, i visited mr price on many occasions to help me to cancel the contract without any success. they called head office and sent e mails but I didn't get any help then i called head office my self they told me if cancel the contract data and airtime my sim will loose network. I followed up with another email and no response I went back to the store again the guy who help me the first time he said that they have to cancelled the contract because as it's a customer request they can't refuse a customer request but they haven't cancel the contract data and airtime. Mr price failed dismally and they continued umabatetly to take my money.