Disappointed with the service

Your company's incompetence blows my mind and the way you reap people up is out of this world I have been paying for a r600 phone for God knows how many years and every time I try to send an email for cancellation it keeps saying address not found or not supported and to think that we got into the contact over the phone but time for cancellation requires email's, faxes and all the ****py things in between, imagine being blacklisted for a r78 installment