Why have i revied this e-mail today?

Dear customer,

The timeframe in which to provide us a valid proof has exceeded the given 10 days.  Based on this information your participation is unfortunately no longer valid.  
Please check our Terms & Conditions or Frequently Asked Questions for more details.
You can find your participation code in the subject of this e-mail: it consists of 8 digits.
This participation code is your unique personal identification.  Please make sure to mention it in all your communication with us.

With Kind Regards,
Your Sony Support Team

SONY SUPPORT TEAM
SUPPORT: http://www.sony-europe.com/support/

This is the only e-mail i have received? and i provided all the payment ( from John Lewis) and camera model number info and photos when i applied for the cash back. But your saying this isn't enough ....rubbish !

And why can't i call and speak to someone about this issue.

Not happy at all with Sony and feel ripped off now !!