Vodafone India — Poor service to its coustomer

Address: Vadodara, Gujarat

DEar sir, I am using vodadafone since last 10 years. my mobile no. is [protected]. I went to the vodafone service outlet situated at Natubhai circle, vadodara on 31st january 2015 at 10.30 hrs for national roaming setvice as I am going to Mumbai. The person whom I met activated the national roaming facility and sms also came in my inbox. After rraching Mumbai I found that thete is no network availaible in my cell. I was at the international airport., I have no other option left as I could not buy or call from there. what's the use of having vodafone sim? I was totally handicaped due to this kind of poor service to its loyal coustomers. why this kind of service when national roaming is free and availaible to every coustomers. Kindly check and punish to the guilty one.