Lenovo — I am complaining about lenovo laptop

Address:	11181
Website:	www.kmd.com.sg

I bought a lenovo laptop from KMD computer centre which has authorized
With lenovo on 2015/May . After about 7months later, my laptop's screen was become black screen and I went to service centre of KMD, , , then they said LCD had a problem . I had 1year warranty and they fixed it and I took my laptop after 3weeks, and it took too long for me . Now the screen also like past I had, I have never open my laptop after they fixed it and I checked .
I can't satisfied their service, I bought my laptop during higher exchange rate because I need it . I want a new laptop instead of repaired . I feel so sad that I bought a low quality standard and service . I want you to tell your authorised company to give me a newly laptop . Thanks