Mweb - no reply to close account

Hi. I want to close my account with Mweb and have emailed *** to send me the cancellation forms. Im already not using the service anymore which im still paying for and as per my mail To them I would like to close the account asap. I do know there is a 30 day cancellation period but i do not receive any replies from them so I can start my 30 day cancellation. I have send a followup mail but still no reply. Not sure what to do now? I cannot continue paying my new service provider and Mweb at the same time. Please help!