I have been with SFI for 16 months , I have purchased over 700 PSA's and not 1 has completed their registration or even confirmed their email address, so I can understand what you are going through! There are no guarantee in life but I have found that starting a co-op and/or buying S-builder, also there are several web sites here at SFI where you can purchase PSA' or even win them in auctions. I hope this is helpful
