HDFC Bank — net banking - bill payments

Dear Sir,

I have done two online TNEB payments on 04/11/2018, Rs.470/- & Rs.50/- detected from my account and bill generated. later in the day of 16/11/2018 came to know from TNEB officials the payment was not reflected their summaries and charged me late fee and collected Rs.535/- & Rs.110/- directly from house.Which was communicated through net banking mail box twice dated 17/11/2018 & 19/11/2018 and online customer care mail communication sent 20/11/2018 still there is no response about the deduction from my account. Kindly look into this matter and solve this issue. It is making my day stressful...