Formula samples?

Melissa • First Glow baby in December 2016, just found out I'm pregnant again and due in March 2019.

So I literally signed up for every single brand that offered them months ago. 38&3 and not a single sample has gotten here. Should I be expecting them this late or just accept they aren't coming? I've already got some stashed away, so it's not like I desperately need them or anything but I was hoping to have them just in case.