Bluestar — air conditioner servicing

We bought inverter air conditioner which stopped working only after 4 years of purchase. On making complaint technician told us that it's pcb needs to be repaired. Then after keeping it for one week we were told that pcb needs to be replaced. We paid in advance for pcb as according to their policy pcb will be ordered only after we will pay in advance. Now pcb is replaced. We are still sweating with air conditioner on at setting temp at 16. Today again technician came in morning and told that it is not cooling because gas is leaking. Still waiting for another technician. Had a word with company s representative and unique international s owner and told them to pay for damages for the suffering caused.