HDFC Bank — Regarding refund of deducted money

Respected Sir. I have done payment of four post code i.e. 962, 965, 969, 970 of HPSSSB through hdfc payment gateway on 24/06/2022 which amount to Rs480(120*4). The payment fees of one post code is Rs 120 and payment fees of four post code is 480 but money deducted from my account is Rs 600. One extra Rs120 is deducted from my account due to server problem. Please refund my extra Rs 120 to me. I shall be thankful to you. I am attaching all details of my payment with attachment