Rto — about refund or address change

Accidentally i have entered different rto office in my learners test application. So i have to cancel my application and apply a new one. Did i get back my first application fees? Or rto office can be change? Or is there any way to write test where i applied since it is in same district? Idukki is the district and rto idukki wants to change to rto udumbanchola since my taluk is udumbanchola. Also some of the places same as my address location are under idukki rto office pincode 685515