Players Klub billing problem

I finally got an invoice for Players Klub for $18 instead of my regular $5 for one month’s service. I opened a support ticket asking for a refund or 2 additional months plus $3 off my third month. No reply. Their new website is:

https://gmasterpanel.com/clientarea.php

They only communicate via their Discord site. And there’s usually a support rep or two available for an immediate response.