Home choice refuses to refund me after order was cancelled and they call centre agents are extremely rude

I cancelled an order with home choice and the company refuses to refund me. I called the call centre numerous times and I’m an being told that I should cancel the order with the courier company. The consultant even told me that the order could still be delivered even though the order is cancelled. I bought an item from home choice , why is it my job to cancel with the courier? The agents are very rude , they speak over you and never listen. They even told me not to call them anymore and I should only call their call centre when I receive some sms. I want my refund ASAP and with the service I’m receiving I will never do business this company. They are quick to bill you but when they have to refund you , they give you nothing but excuses.