No incorrect billing feedback from Vodacom

I called Vodacom on 01/11/2023 to query about a R2840 bill that was debited from my account for a contract I no longer had with Vodacom (it was cancelled two months prior). I first stoke to a person called Sphesihle (who transferred me to contract department), Mpho , Nkululeko Mhlongo (who said he'll do a service request for me to get reimbursed the 2 months incorrectly billed). I was then transferred to aftersales (Neo), Lindiwe (who transferred me to contracts department, and I ultimately spoke to Vuyo Vaso/Yaso. She gave me the reference number *** so I could get a credit pass for September & October 2023. on the same day at 19:26 I received a call from Vodacom customer care (+***2) from a lady who promised to send me proof that she'd escalated the issue to her boss and that she'd send an email as proof of this so I can respond with my banking details. Feedback was expected on Friday 03 November 2023. I didn't receive the email and I got an sms saying my query was closed (query no ***). Today (06/11/2023) I followed up with Vodacom customer care (without success because they need an existing Vodacom number to query). Today I spoke to Felicia, Kwanele, Phuthuma and Sabelo. I'm not happy with the way Vodacom unilaterally decides to close out queries and the fact that you can't speak to a consultant makes it worse.