Hi-Tech Domestic Products — geyser not working

Maine geyser liya tha trade fare se, 28 taarikh ko install kiya lekin uske next day hi wo kharab ho gaya usne hamare ghar ki saari fitting kharab kar di humne customer care me complain ki lekin koi bhi response nahi mila wo daily kehte the ki aaj aaega lekin 10-12 dino tak bhi koi nahi aaya phie ek din hum service center par khud gaye tab jakar unhone geyser bheja aur wo bhi ek din hi chala aur ohir kharaab ho gaya ab phir se un oar complain kar rahe hai lekin koi response nahi mil raha hai
Aap ek kaam kijiye humko hamara payment refund kar do aap kuki utna follow hum nahi kar sakte kisi ko itna
Pls refund my balance