Airtel — karnataka to tamilnadu number porting

Address:	Chennai, Tamil Nadu, 600043
Website:	airtel.in

I have been shifted to chennai from bangalore on 15th sep 2017. Have initiated the number porting request on 19th sep 2017. I have given request for my and my wife number. They said within 4 to 7 days it will be ported to chennai circle. That was surprise for me, as the porting happened within half an hour at bangalore couple of years back. They said some process change, i waited after 4 days my number got ported. But till now my wife number is not ported. Around one month, i am chasing around. I went to airtel center multiple times, called 121 multiple times. I got very very poor response. I have been their customer for 7 years now. I am highly frustrated the way they handle their customers.