75k character pack is missing, and 15k/35k is not giving character pieces.

This response was totally unhelpful.  As the original post stated, the 75k character pack is no longer available, completely missing.  No character pieces are in the other packs any longer.  We have bought a zillion of them.  Not one single character piece.  We are still missing many characters, so how are we supposed to get them?

OP said he has around 10 characters missing, which corresponds with the amount of legendary characters there are. As such, (and as indicated by the fact that the response was accepted as a solution), OP was likely simply not aware that he/she had collected all he could from the 75K packs. Once you have collected all rare/super rare characters, there is nothing left to get from the 75K packs so they are no longer available to buy. The remaining 10 legendary characters are either only obtainable as a reward from Infinity Time or can very, very rarely be gotten from a 15K or 35K pack.

If you are indeed having a problem where there's rare/super rare characters left to get and you are not getting any stickers, then that's a different problem entirely. No need to call a response "unhelpful" when it was addressing a completely different issue 🙂

Yeah, I've got the same problem.  Meanwhile, my friend still has his 75K sticker pack.  What the heck is going on?

What's going on is that, as stated many times before in this thread, you probably have collected all characters except for the legendaries. The legendary characters can not and were not designed to be gotten from 75K packs, so since the 75K packs have nothing left to offer, they're no longer available so you don't waste your money and get zero stickers in return.

An easy way to verify is by going in the sticker book in either of your bases in the backyard battleground and seeing if all of the characters left to unlock consist of only 2 sticker parts and have 'legendary' as their rarity.

Okay, thanks for the explanation.  After reviewing my sticker book, the only characters that I'm missing are the Legendary ones.  I do have a sticker for one of the Legendary characters.  

Yes I also didn't realize that only legendary characters are missing.