Nick here from Shopify.
We understand that this is quite a frustrating situation to find yourself in. A lot of orders do generally take longer than a week to arrive and can take up to 30 days as an industry standard, so this is quite normal. What we do suggest is to contact the store owner directly from the info provided on their store. If you do find that you are not receiving any reply, we would recommend checking your spam folder to make sure they have not passed through to here instead. If you still are unable to get in contact with the store owner, we then suggest contacting your bank directly regarding the purchase that you have made. Your bank will have measures in place for you to follow in this case and will be able to help you in relation to the payment made from your account.
Shopify takes any suspicion of fraudulent stores very seriously here at Shopify, so if you still haven't heard from the store within the next few days, let me know and I can reach out to you directly about this and I can look into it further for you. This is the normal protocol for situations like this and as I mentioned your bank has measurers in place for you to follow to make sure you don't lose any money.
All the best, Nick