No, the visa application fee is non-refundable in all cases, including if the visa application is rejected.
The customer is obliged to provide accurate and true information to Vscb.ch while filling my application. The Embassy / High Commission / Consulate reserves the right to ask for further documentation if required. All applicable Consular/Embassy fee, Vscb.ch service charges and travel insurance amounts are non-refundable. Visa fee is subject to change without prior notice due to policy changes & foreign exchange fluctuation. Approval of the requested visas is solely at the discretion of the concerned Consulate / Embassy and vscb.ch will not be held liable for any delays or rejections after submission. Processing time is not guaranteed and may vary from case to case. The processing will be calculated from the time the Embassy/ consulate has received the application. Applicants are advised to plan their travel well in advance and complete visa formalities up to 30 days prior to their intended date of travel to avoid delays.
https://vscb.ch/wp-content/uploads/2023/07/Vietnam-Form.pdf
