Mr Price charging for services that were cancelled 8 months ago

My daughter opened an account with Mr Price and got a R800 credit which was fine as she was mainly doing this to get a credit rating. On opening the account they gave her a sim card. what a disaster - she was blocked from her phone for days as it was activated properly or something so we went into the Table Bay Mall store and asked them to cancel the sim card and the contract (talked to the mobile section on the phone in the store) and they did this and her number was resinstated back to Vodacom - now i find out they have been charging her R99 per month for the last 8 months for the sim card which she cancelled. This is not acceptable. the call centre has now confirm they have cancelled the sim card but only for one month so what about the R800 she was charged????? then being new to the credit scene she at first agreed to a life cover and then decided to cancel this as well. i spoke to the department that handles this and they say yes it shows she cancelled it on the 8th of June. why is she still being charged this policy 8 months later. R52 times R416 for a policy that Mr Price has on record as being cancelled. We sent emails and still more than 48 hours later are waiting for a reply. The only response is that the sim card has been cancelled - what about the refund for both the sim card and the policy which were cancelled? THIS IS NOT CUSTOMER SERVICE. You are now threatening to hand her over for R543 which is basically the sim card and policy which were cancelled. You charge a R18 service fee - which on my other accounts i dont get so dont know what the service fee is for if you dont offer any service whatsoever.