I purchased a CELL C starter pack today had no problem at all. Just asked the cashier at CNA that I want to "RICA" quickly she did it with her POS but she never put my physical address, postal address was quiet surprised that it went successful.
I think some merchants are too afraid to RICA the simcard cause the sales person who is registering the simcard can get into trouble if it's a stolen bunch etc cause it's under their profile.