We don't know the reason for him not getting his joining voucher, and he should probably contact customer support by now if he hasn't done so. Including me and others who hold this card can confirm it's not necessary to do a POS transaction initially. Even I was under the impression that you had to do at least one POS, but that's not the case. I got this card as recently as 13th December, did only one online transaction, and got the joining voucher; now waiting for 1k CB.