You have more than one recourses of law to have in such a case that the purchaser is not delivered the product by the supplier.

The way that I would suggest you to follow is sending a notice to the supplier by notary as,

-granting him/her a certain time like 3 or 5 days to deliver the product,

or

-notifying that you are receding from the contract as demanding the cost you paid back.

In case of any refusal or silence, you can go to the bailiff's office as bringing forward a bill and the receipt to start the enforcement proceedings.

The consumers may, furthermore, apply to the consumer arbitration commissions founded within the governors' offices in any case concerning the products that priced less than 724,99 TL.

I'd like to write a longer message, however it's not possible to get informed properly regarding the issue from your couple of sentences.

Hope this message helps,

Best wishes.