Hyundai Motor India Limited (Hmil) — hyundai creta a/c complaint

Sir,
I had purchased Creta 1.6 VTVT S from Apco motors, Wayanad, Kerala during September 2015. Right from the first week onwards, the A/c is giving complaints. On long distance travels, after one hour of working, the Ac vent is getting blocked and only hissing sound will be heard without cool air supply. This is especially too uncomfortable and disturbing when the outside temperature is high.
I reported this problem initially at Apco Hyundai ( Wayanad and Calicut) and later to Classic Hyundai (authorized service centre in Muttil, Wayanad), in addition to Customer care call centre of Hyundai.
They have tried many times to set right the issue without any success. During the past two years several times I have parked the car at the service centers and according to them, they changed Air filter, Thermistor, Expansion valve, etc .
However problem remains the same and it is really unfortunate and annoying to notice that such a big company has failed to solve an issue even after two years.
I have taken the photo and video clip of the Ac line near to the engine which is covered with Ice (during the complaint time). Probably this ice formation clogs the lines and your service technicians failed to fix this issue
Kindly intervene and solve the issue immediately

Mini Thomas
W/o Dr.George Daniel,