I totally understand. I think I am also busy somehow. It was for my own convenience that I bought your A, however, you have wasted a considerable huge number of time and enegy of mine since I paid you the money. So, let's save time for both of us. Please return my money.
I understand you. I'm busy too. I bought it from you for convenience. But since I paid you money, you fritterd away too much time and energy. So, please give me back my money for no more wasting time.
仅供参考:I totally understand you. I am busy too. I have never expected to waste so much time and engery on buying AAA from you, ever since I paid you. This is not what I want. As a result, I demand a full refund and stop wasting each other's time.