Instructions. Click the link in the Resources section to send an email to Vodafone customer support. Type your name and valid email address into the appropriate fields. Click the radio button next to the Are You field that describes your relationship with Vodafone.Enter in the mobile number you wish to cancel.Type your account password or PIN number into the appropriate field. Include your account name, account number and mobile number in the message body. You should also provide your billing address and the date you wish the contract to be terminated.If you plan on porting your number, you should also request a porting authorization code. Click Submit to send your message.nstructions. Click the link in the Resources section to send an email to Vodafone customer support. Type your name and valid email address into the appropriate fields. Click the radio button next to the Are You field that describes your relationship with Vodafone.