[Resolved]  Nokia 5220 Xpressmusic — System software problem

I bought a nokia 5220 expressmusic handset on 5 may 2009..since then i am facing repeated problem in my handset like sim cards except airtel cannot be read,it freezes n hangs n restarts itself n shows a white screen of death, whenever i use the timed options given in profiles menu it hangs. I have got my handset repaired from nokia care thrice within 9 months and i was supplied job sheets only once. On 26 january i again faced some problem and nokia care took the handset again and told to come after 12 days and supplied a job sheet this time job sheet no.[protected]/100128/38. After around 3 months the warranty period of my handset will be over,so i expect a replacement or a proper solution so i dont face the problem again.
Address-
Benachity, durgapur-713213
West Bengal.
Ph no. [protected]