Wish they responded with the same alacrity to complaints on brokers!
Better move on from that. Its ok if you want to pursue it further/spread information i guess, but do not let it get to you in your trading. ( Just saying as i have noticed your focus on this for few months now).
I had issues with 5 paisa. Duffer broker closed my short positions multiple times when profit was increasing( among other issues) - due to faulty idiotic backend system and their absolutely terrible brain dead support did nothing but waste time. So have closed account. No point wasting more time with them
I am trading with Z for last few months, and they seem to have made a lot of progress in stability since i last traded with them during nest days. Have not had a single issue, vs Fyers that had problems few times. Q settlement is also done very fast and money is in bank few hours before open. api is good too. Very happy with Z, I dont know if there is another broker competitive with Z. Maybe IB for EOD trades.