Nokia N8 — Not proper receiving mail

Address:

Ahmedabad, Gujarat

Hi, I am Tarun Modi, having a car rental travel agency in Ahmedabad & Vadodara City, on the point I purchased Nokia N8 on 28.02.2011 through Nokia priority dealer (Sunshine - nr.Parimal Garden) there is some major problem is that i cant receive my mail without synchronism, and my 95% business on my mail, thats why i am not satisfied with Nokia N8, Four days ago i went to Nokia care at that time problem has been solved but after 24 hr problems created related to mail automatically again, give me suggestion,what i will do, may i go with Samsung Galaxy ? (i am using Only Nokia phone since 1998)