Toyota — Air conditioning of innova

Being a customer of Toyota since 2006, till date experience was better and now had a issue with air conditioning cooling which the air blowing was perfect and in cooling had a issue. Went to udupi showroom and cleared the doubts, they said there might be a chance of gas leakage which they have to open the dash and check. So we were OK of it and gave the vehicle for service. Running was 102000 km 7.5 years old. Their estimation was within 2 to 4 thousand rupees. And got a call from them in same day of service which that told they have entirely open the air conditioning stuff and the main coolent is damaged and will charge total of 20, 000 RS. We told no need which was very expensive for silly... And told them to to fix the stuff which they checked. Which was about 6000 rain only for dismantling.
Not happy with them... Cuz they had to inform us before that... Which if there is damage that will cost us that much. We didn't have any option, which was again the expense...and told to operate.
Not happy and never recommend this product or company to others...
And service charges are hiking day by day for innova. Running of just 1 lakh car how it is possible tht the AC is not cooling and showroom which didn't inform that only for dismantle will cost above their saying.

United Toyota udupi ...customer is not satisfied.