I signed up for several stores to hang tag coupons. I was only sent enough tags to complete half of the stores that I was assigned. I followed the instruction on how many to tag and total for each store. I don't have any left to complete the other three stores.
So do the adult thing, contact your manager, say you followed the instructions, and are short supplies. Then ask the person to advice you how the company wants to proceed.
I mean I had to do a reset recently where I was a MONTH late, and couldn't complete it, but I explained to my boss the supplies were late, and didn't work with what I had, and I sent him photos. He was 110% cool with it, and accepted it wasn't my fault, and I got paid for it.
Yes, that happens sometimes. It's a good idea to count everything when you receive it so you can contact them right away and maybe they will send the balance.
When you receive supplies count them and divide it by the number of locations that you have been assigned to know if you have enough supplies to complete the job you have been hired for. Then you can contact the company informing them what the situation is. If you do not get a response you can at least put some in every location which is ultimately the goal and report back. You may or may not receive additional supplies but you will have at least done the work to get paid.