Refund

This must be the worst company ever when it comes to customer service not to mention outdated systems. So I was in arrears for 1 month. I got calls a 100 times a day,literally. I picked up their calls and made a ln arrangement but was still getting the calls. As soon as I verify my details they be like, oh I see you have an arrangement! So why are you calling me , everyday not once or twice and they say the calls get pushed through. Please get on with the times and have call reminders set up! Nonetheless as agreed, after the debit date I decide to pay them manually as promised. They deduct the next day. Fine, I log a refund query on the 26th of June, up to date I have not received my refund!The only call i received was from their manager who was very polite and explained the error, he seemed promising but again, 2 weeks after identifying the error the money is still not paid up!! I am so irate. I even cancelled my accident policy plan. I can never put myself through this again. I hate bad customer service