Promotion Code issue

I bought GTS with promotion code costed me 14 coins then i refunded it after learning GTS works on direct heal only. I wanted to get it on my pala. Now i cant buy GTS since it cost 23 coins and i have 14 coins and promo code doesn't apply.
Any Suggestion?

What suggestion? You've used your code, period. Try to be more mindful next time

Okay! thank you.

You can also try and email [email protected] but I wouldn't hold my breath.