RE: why no refund?

[http://dummy.us.eu.org/robert (Robert)]

 > From: http://dummy.us.eu.org/robert
 > Date: Wed, 21 Apr 2004 06:51:48 -0700
 >
 > As I said before, the only information I received was:
 > 
 >     While processing your order, we found that your sales receipt did not
 >     indicate the correct product purchase(s) for this offer.  Please refer
 >     to the offer requirements that show the products needed to be
 >     purchased for this offer.

BTW, there were some comments in Spanish written on the envelope which
was returned to me:

4a17
256
A0 biene la compra

I don't know if this is some kind of code specifying what was missing.