Pathetic service from Vodacom

I have cancelled my contract in January 2019 via online because I have tried on numerous occasions to phone the number. Keeping in mind that I have moved to Namibia. I enquired online the email address where I at least could request the cancellation. The gentleman online helped me and said that they have a huge influx of mails and it would take long for my mail to be reviewed. He offered to escalate my request to the relevant department. When my next debit order went off, I started mailing the customer care department and after going forwards and backwards, they said it would be cancelled. This was in Feb 2019. The same thing happened in March and April. When I sent a mail now again, they have the audacity to quote to me their rule of late cancellation policy. This is extremely unproffesional and an *********** display of poor work.