Re: please refund my amount
If you have credit left over in your AdWords account, you can request a refund by cancelling your account. Your refund will get credited back to your bank account or the credit card associated with your account.
It can take up to 2 weeks for Google to process a refund, and typically another 10 days of processing time for your bank or credit card company to credit your account.
If you want to read more information about this, read this article in our Help Center.