SOLUTION 1: i changed all metal (2 hose pipes) and other rubber (2 hose pipes) in my case and metal pipes were seriously choked and had holes in them, so i got them changed in Rs. 1000 for all pipes and 500 labor cost from 3s dealer.
SOLUTION 2: Oil pan leakage was sealed properly and oil pan was properly washed and cleaned along with chamber and other pipes through which oil flows under the car. Total labor cost Rs. 1500 and sealant Rs. 250 and petrol of Rs. 50 for wash purpose.
SOLUTION 3: i bought made in taiwan steering boots from a shop costing me Rs. 560 and roadside mechanic took 250 to change them.
SOLUTION 4: Gear oil shifter leakage was sealed and it took almost 2.5+ hours for the job, for this the gear box is never removed. only the car is lifted so that the job is done easily and i went to 3s dealer so they have those lifters, that job cost me Rs. 2500 and gear oil was changed Suzuki genuine gear oil costing me Rs. 1150 for 3 Ltr bottles. Now the gear which was getting stuck from neutral to 1st is resolved and improved significantly.
SOLUTION 5: I had no time for other works as 3s closes at 6 p.m and it was almost 7 p.m so they advised me to leave my car there so that they can repair the fuel tank if it can repaired, but i refused and took the car with me, anyways, my car is running fine even when the fuel tank is de-shaped so i will repair it once it creates any problem, 3s dealer told me that original fuel tank is around Rs. 5000 if you want to replace it.
Other jobs done too: i bought genuine cultus radiator from a local shop of Loads company costing me Rs. 5800 and radiator change from a local mechanic took Rs. 250 for change and coolant cost me Rs. 450 per 1 Ltr bottle and it took almost 3.5 litres of SGO coolant in the radiator and reserve bottle.
I changed the battery too, bought AGS battery 50 Amp with six months free warranty and costing me Rs. 3500 and old battery of 50 amp of phoenix company sold for Rs. 800.
Thanks all for your precious time and helping me out. I will soon be posting image of 3s dealer bill for your reference.