HDFC Bank — Electricity bill amount get deducted which is already paid two days early

Address: hdfc bank, pant nagar branch, ghatkopar east Mumbai 400075

On my credit card i had made an auto debit of electricity bill for every month but by mistakely my brother had made the payment from his debit card on dt 13/4/2020 which was successfull & on 24/4/2020 their is also a deduction of electricity bill which is already paid & when i contact my bank's home branch branch(hdfc bank) they tolled me that it will automatically get reversed or otherwise it will adjust in your next bill.still it were not get adjusted or else get reversed .
And when these things when i told to that lady who sold me the card they were like aap hdfc support ko mail kardo aapka kaam hojyega . is this the way they have to do with me like this & when i told them kindly guide or once atleast you should speak with the above team they were like "aap mail kardo sir hamare yeha se kuch nahi hoga "