Hey @drmoha ,
Welcome to the Shopify Community!
If you haven’t made your first sale yet, you have the option to change the currency of your store via your Settings > Store Details > Store Currency. After your first sale, the currency is locked in and can’t be changed therefore contacting support would be your next step.
Are you having issues getting through to our support channel? If so, what is happening on your end / are you met with any errors? We don’t have direct emails you can contact us on, so you do need to contact us via the contact page.
Please visit https://bit.ly/3cJkx8V and log in to your account to create a support request.
If you need further guidance, you can follow the step-by-step instructions mentioned in this forum post to reach our live chat support team.