Poor service from Discovery Vitality

I must say I’m very disappointed with Discovery. Firstly you debit an amount from my account on a service that I never opted in for, secondly you promise that I will get my refund by the 7th of December and till this day I have not received my money. When I call to enquire, I’m being sent from pillar to post making use of my own airtime and I’m not getting my money back. Such poor service for something that is due to me is really not acceptable. Please do right to your customers