over billed on expired contract

good day<br> <br> my contract expired at telkom and i was not informed that it would take another 30 days for the contract to be cancelled which resulted in me cancelling the contract mid month. the contract went from 269 pm to 719 pm for the same package . when asking to change t a cheaper package on the expired contract i was told to wait another 30 days. now i have 2months to pay the 719 pm bill as the 30 days lapses over into a new month<br> <br> this is the worst out of contract service i have ever experienced and i will make it my mission to inform and advice as much people as possible about their service