I want all three golem skins to be changed.

https://www.youtube.com/watch?v=4jz6U0qpMXE

I thought Golem Skin applies to Golem. But only one skin is applied to This is a fraud. I want to refund it.

I want Golem Skin to be applied to not just one, but to three.

If this is not possible, give me a refund.

One skin for one golem - where exactly is the fraud?

Nowhere, and i do mean nowhere does it state that a single golem skin applies to every golem summoned.
More than that - use some common sense - any skin, be it a golem, regular skill, spell or aura mtx applies to a gem of your choice as long as requirement is met (e/g aura for aura e.t.c) Unless you have found some sort of mega epic rare golem skill gem that can alone on it's own summon multiple golems, i don't see how you managed to conjure up the idea that a single skill gem mtx should apply to every gem of that type (e/g golems)