商品購買之後，輸入金鑰，但此項工具的功能都無法正常使用，聯繫很多次，客

商品購買之後，輸入金鑰，但此項工具的功能都無法正常使用，聯繫很多次，客服都沒有回應我，感覺受騙，所以我想退款。

結果 (英文) 1:

After the purchase of goods, input key, but the function of this tool will not work, contact a lot of times, did not respond, feeling cheated, so I want a refund.

結果 (英文) 2:

After the purchase of goods, enter the key, but the function of this tool can not be used normally, contact many times, did not respond, feel cheated, so I want a refund.

結果 (英文) 3:

After the purchase of the product, input the key, but the function of this tool can not be used normally. I contacted many times, but didn't respond. I feel cheated, so I want to refund.