Vodacom - terrible service

I had a 2-year contract with Vodacom which ended in February 2021. They continued to deduct a premium after the contract endedat even though the service was no longer being used until I called their call centre in September 2021 and insisted they cancel the service and stop billing me. But they still continue to bill me and run debit orders for the past three months and invoice me for October, November and December. When I email them I receive no response, only an automated e-mail that is not being attended to, I have to spend hours phoning their call centre to ask them repeatedly to cancell the contract and stop harassing me for a service I cancelled months ago. Pathetic service, very inconvenient, would not recommend their service at all!!