Error 80151015 (Account blocked from purchasing)

Error 80151015 - Account Blocked or Profile Corrupted

http://support.xbox.com/en-GB/xbox-360/errors/error-code-80151015

Error 80151015 occurs when signing in to your account on Xbox 360

Daft, thanks for the response! I believe, the problem fixed itself after i tried anonther game (A DLC in the case). But now, i need to pay for a game i can't download. When i tried to buy Saints Row IV (This month's GwG) the error appeared, and kept me from
downloading the game. But in all of the pages, Microsoft mentions i bought the game. I paid for a game, and in my console, it doesn't show i bought it (The price is still there). Any suggestions on fixing this problem? :/

Have you tried the solutions here ?

Showing results for "80151015"

Error 80151015 occurs when you try to sign in to your account

Problem

You see the following error code when you try to sign in to your account on your Xbox console:

Error code: 80151015

This may mean that your profile is corrupted or your Microsoft account is blocked.

Solutions

To resolve this problem, try the following solutions:

•Update your security proofs. Follow the steps at Add and update security proofs for your Microsoft account to update your security proofs. Then, try to sign in again. If you can’t sign in after you have updated your security proofs, use the next procedure

•Delete your profile and download it again. To delete your profile and download it again, follow the steps at Download, move or delete your Xbox Live profile.

•Clear the system cache and restart the Xbox console. Here's how:

1.Press the Guide button on your controller.

2.Go to Settings and select System Settings.

3.Select Storage or Memory.

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4.Highlight any storage device, and then press Y on your controller. (It doesn't matter which storage device you select; the cache will be cleared for all storage devices.)

5.Select Clear System Cache.

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6.When prompted to confirm storage device maintenance, select Yes.

7.Restart the Xbox console and try to sign in to your account.

If you still can’t sign in to your account, contact Xbox Support by clicking the “Contact us” link at the bottom of this page.

Update: I forgot to add the information, i bought one game, but when i tried to buy one from GwG discounts, the error happens. I recieved the confirmation of the purchase in my email, but in the console, the game isn't on the download list, and the price
is still there.

We have called support again, and the account is not blocked.

What you have said about the message meaning the account is blocked is not true according to the documentation here

support.xbox.com/.../error-code-80151015 which suggests that the profile may also be corrupted. I guess that's too unlikely, since we tried to move everything to the new hard drive? If that failed half way for some reason, you could imagine that the data
would be in a bad state, if the system is not transactional.

The documentation here
support.xbox.com/.../error-code-80151015 says that if the profile is corrupted you must connect to xbox live to download the profile again. We cannot do that because we cannot connect to xbox live.

If we try to delete the profile, it is still there when you turn the xbox on again. Again, that sounds like the internal storage is in a funny state. Not being able to delete the profiles, does not sound like a side effect of the account being banned.

Is there no way to reformat the internal storage, and install all the software again from scratch? This is what I would be doing with a pc.