Vodacom Insurance (Cellsure) - No service

I had my Vodacom cellphone contract for two years. Recently I decided to cancel the insurance contract. On Monday the 4th of March 2019 I phoned Vodacom to cancel the contract, they informed me that the insurance divisions phones are not working and I have to send a cancellation letter via e-mail to ********** A week passed without any feedback. On Monday 10th of March 2019 I phoned Vodacom again and they gave me another e-mail address to use instead. I send an e-mail to ********** I received an Auto Response to use other e-mail addresses and up until today no feedback. This definitely make one think twice about Vodacom and the service they offer.