lack of service / incompetence

On 19th July, I requested to change my dstv subscription.. The lady confirmed it was done and will be effective from August. And in the interim, I will be charged pro rata for the current package I am on as I just reconnected my services. On their website, they are now charging me my old subscription for august. I've been strigging to get hold of them now for a week as the dstv smartcard says e30-4 error and no one is able to assist me. This is absurd. We called and emailed. Their call centre is useless as they say they'll do one thing and then do the opposite..