Similar happened to me. I did 9 rolls and got only 12 stamps between them. It cost me 9 multis to get as much as what you got though haha (1 aerith and 2 tifa weapons all the same). I decided to give up on that banner after that and I'll save for the future banners.
![[FF7: Ever Crisis] Tifa Bahamut Fangs Overview & Pulls Pt.1](http://i.ytimg.com/vi/wnperjSKl_I/mqdefault.jpg)
![[FF7: Ever Crisis] Tifa Bahamut Fangs Pulls Pt. 2](/img/n.gif)
Similar happened to me. I did 9 rolls and got only 12 stamps between them. It cost me 9 multis to get as much as what you got though haha (1 aerith and 2 tifa weapons all the same). I decided to give up on that banner after that and I'll save for the future banners.