Nokia E-75
My network is weak

Dear sir,

i have a problem in my nokia E-75.some time it's network is not working.i have given it in nokia care ahemedabad, near mansi tower, they are saying that there is no problem in my cell, but i m facin this problem, now let me tell what i shoud do? i m fan of nokia, but this service has not given me satisfication.so sir my requet to u that pls solve my problem immidiately.