Thanks for your interest in our service. The number will still be attached to your account. However, the number is meant for one-time-use to receive the SMS verification code. After it receives the code, it will be gone. Your account is still active and attached to that number and other people can not use that number anymore.
You will also can not retrieve that number for the second text message.
Oh, I see. Thanks for clarifying that out. I'm planning to use your service but I need it (the same number) to be available for multiple use which is not applicable with your current offerings.