Samsung — AC after sales

My name is Gowri SIvakumar and I'm writing this from Kochi, Kerala. I'm extremely disappointed with your service!

I had purchased two Samsung ACs (1.5 tonne) from Ammini traders, Tripunithura, Kochi on[protected].
During the entire free service period I informed the assigned technician about the low cooling effect and dusty smell in one of the ACs and it wasn't dealt with seriously. On the day of last free service he filled in gas and still ignored the foul dusty smell that the AC gave out. Neither did he ever educate us about a water wash which we could have availed during the free service period nor did he do anything with regard to the low cooling effect.
He visited our house for the aforementioned free service (final free service).

By mid of June, the AC ceased to function completely..When I informed the service centre about this, the technician casually walked in to fill up the gas..which was filled just two months back? I was charged Rs.2300 odd for this service (July 3rd, 2021), by the same technician.

After this incident, we left for a short vacation to come back home to realise the AC has absolutely no cooling again! We called for service again.
He filled in the gas again and told us it's because we cleaned the vicinity of the outdoor unit..the gas leaked out.We got back on 18th of July and we realised on that very day that the AC is not functioning. The surroundings of my house were cleaned only after we informed the service centre about the malfunction. The very evening after he filled in the gas, the AC gave error codes (EL..something) and it ceased to function again (no cooling)!

Upon informing the technician about the same, he said ' Madam, it takes about 45 minutes to cool the room..leave it on for about 45 minutes..'!
My room is pretty small and it's a 1.5 tonne AC.
We aren't using an AC for the first time.
It was clear from my end that the AC had low cooling and that it was giving out dusty air.
The service centre took the AC and outdoor unit to their centre to apparently investigate it. After almost a week, when I called them.. they said the leak occurred because of some faulty connection between the units.

They initially charged me for gas filling, service, transportation and part change.Upon asking why am I being charged repeatedly for gas filling (which is on account of the inefficiency of the technician to detect a fault in the machine on time)..they were a little confused about how exactly to extract more money from my end!

Since the machine is already at their facility..I enquired about the foul smell..which apparently they had no idea about, at all!
When it was clear to them that their technician had not paid justice to his role..they offered a free shampoo wash.

I was finally informed that the transportation fees and change of faulty parts will cost me Rs.1200 odd.

Why am I being charged at all..when these issues could have been dealt with during the free service period itself?
I paid the entire amount the dealer specified for the ACs and I'm entitled to benefit from after sales service at the right time!

I observe that the level of competence with regard to your Service Agency (Techno Cool, Kaloor, Kochi, 17) is far from satisfactory or their actions are deliberate to promote their own interests. Employing such ill-informed agencies may lead to tarnishing of your reputation. In our case it's been almost 45 days since they have taken the AC unit to their workshop, for which time we are not able utilise the services of the AC. I request you to handle this matter with due seriousness to maintain the faith instilled in the minds of customers.

Customer care system is very inefficient.
Been in talks with them over the for the past 35 days. Nothing has been done.