Error in indicating the airport in arrival

I have filled and paid my visa request yesterday and i did an error in the airport of arrival. How can change it?
Do i have to do another visa request paying another time?
Thank you very much.
daniele pattono


My application form numer is
ID: EVS413329.

and this is the textof your aE-Mail
Thanks for booking with us, your visa application ID: EVS413329. Your visa is processing and we will send you the visa on May 30 2016 at 18h00PM GMT +7 ( Vietnam local time).

Applicant Fullname Gender Date of Birth Nationality Passport Number Date of Arrival Port of Arrival Type of Visa
1 daniele pattono Male May/02/1968 Italy AA3745624 Aug/02/2016 Cam Ranh 3 months multiple