BAD customer services

Ordered items from Game store online on the 11th last month and they delayed my delivery. I then opted for refund before they even pack my items. Now it's Day 23 and counting of not receiving my refund. Their customer service take a week to respond via email and their chat option. On phone call they will tell you wait for 24-48 hours you'll receive a call. They told me the same thing 3 times. Never received a call. Sometimes when u are on a call theyll hang up, n you'll get a new person multiple times. All of them no solutuon only empty promises day by day.Never thought a trusted company like Game would do such. I'm even thinking of open a case coz they are ****ming me a lot of money. Pls help