Summarize this article in one sentence.
You should get an email confirmation shortly after requesting your refund. If you don't receive one within a few hours, you may want to call Steam's help line to check to make sure your refund request was received. Be patient when waiting for your refund. While some refunds are processed quickly, it can take up to a week for your refund to be processed. It may sometimes take longer if Steam got a lot of refund requests around the time you submitted your request. If you get confirmation your refund request was approved, keep an eye on your bank account. Within the next few days, your money should be refunded. If it's not refunded within a week, contact Steam via phone to make sure your banking information is correct.

Summary:
Check your e-mail for a confirmation. Wait a week to hear back about your refund. Check your bank account to make sure the money was refunded.