The serial number is what costs money. Did you purchase Adobe Acrobat XI Pro? Have you checked your My Account area of www.adobe.com <http://www.adobe.com> to see if the serial number was delivered electronically? Have you checked your e-mail?
Hi, I did pay for the Adobe XI (packaged in thin red box as DVD) from Adobe and was billed through a third party for Adobe. Nothing is in my account history.
The link I provided in reply #2 tells you where to look for a serial number when you buy physical media
>from Adobe and was billed through a third party for Adobe
To me, that means that you did not buy directly from Adobe, you bought from someone else
You will need to find your serial number sticker (the link I posted tells you where to look) or contact the vendor who sold you the program