[Resolved]  Samsung / Split Ac — Split AC not cooling

I purchased a samsung split ac(model AS18WADTL)dated 19/3/07.
for my business place, till date the AC is low on cooling, an interesting thing is, I bought 1.5 ton split to cool an area of 200 sq ft, but Ithe cooling wasn't fine, every time I complained an engineer comes to service the ac, after sooooo many services i failed to get the kind of cooling i expected from samsung, I m forced to remove the ac, I have bought a LG split now, as my business was effected.
Now the Samsung Ac is just lying in a corner.
Please advise what can I do now?
Samsung company should atleast replace it which I know is not possible, nor I can file a case against the company.I suffered a lot which Samsung product. I am helples.
Please help...