Helpful information can be found on the Ertisun website in the sections: Cookie Policy, Terms and Conditions, Return Policy.
If after reading the Ertisun website you still have questions, feel invited to contact me. I will respond with great pleasure within 24 hours of the receipt.
You can use the contact form or call the number:
I work from Monday to Friday, from 9:00am to 4:00pm.