Originally Posted by ArizonaGuy:17111996
Simply keep all emails - or print the confirmation pages to PDF - for all your hits. And be patient. After the valid activity period is over, if all your hits have posted but you haven't received your miles in the sweeps in November or December then you can contact US and provide the list of hits. They'll obviously know how many and what hits counted and you can resolve any discrepancies then.
Additionally, I only use the US MasterCard for any payment related to GS..
That way, the purchases will have to be somehow (indirectly) recorded at the end of each cycle by US and I ll have a complete summary of what the GS has cost me!!