Vodacom incompetance

I am not very happy with Vodacom as I requested early cancellation on a contract I was given a quote and instructions which I comp**** with on the 10th of April 2024, I have been following up intermittently since then to date the issue has not been resolved, Today I tried following up again phone was dropped three times the 2nd time whilst the consultant told me to hold on as she was getting the supervisor, I'm at my wits end and do not know how to go about getting my query resolved.