Vodacom Bad service after contract cansellation

I recently decided to upgrade at Vodacom online from my pay-as-you-go to a new 36 month contract with a Galaxy S26 Ultra handset. I was told by a vodacom consultant that a simcard number change will be possible if I go instore at Vodacom. I received the phone via courier an did not open or activate the phone. I went to Vodacom Woodlands and requested a number change. They informed me that this was not possible at all. I then contacted Vodacom who suggest that I could cansell the contract and request a new contract on the new number. I did so and then my problems started. They took forever to collect the unopened phone and after eventually they did and then I had to call and e-mail numerous times to inquire about the cancellation. I never got a response of whats happening. In the meantime they billed me with a debit order that I could not return at my bank. I kept on e-mailing Sharde Joyce who was helpfull at first but then started ignoring my mails upto today. Vodacom blocked my cell number at their customer service so I cant call them and I get zero feedback. It has been longer than a month now and my debitorder remains unreturned. This is absolute bad service and I would highly recomend anyone who consider to use Vodacom as service provider to think twice. Do you really need such bad service ? Their are other companies out their who are much better service providers !!