Extremely poor service & 1 month of waiting for a credit

My changed my line in December and instead of cancelling the old line, Vox debited my account for the new and old line, as well as an installation fee on a fibre line that already is up and running. After a long time spent trying to phone in and cancel the old line so mi don’t pay for two fibre lines to the same address, I finally got through. They cancelled the old line and put through a credit to my account. A month later this has not been completed and no response on the multiple emails (with a reference number) that I’ve sent through to them.

Extremely poor and inattentive service that landed me in this situation in the first place. Not sure about the whole “SA’s leading telecoms service” narrative…