Xiaomi India — sim tray nil issues very bad experience in mi

As i have purchase mi mobile at thoothukudi mobiles offline intirunelveli vannarpettai but sim tray nil in mobile not proper response in service centre also thoothukudi mobiles also not responsible to customer supports my mi mobile redmi note 5 pro still software issues goes but they did not proper response for me i have raised complaint in mi complaint but after 24 hours they did not proper answer or call for me complaint numberwoin[protected]