Airtel — after mnp airtel sim not working

I ported my mobile [protected] to airtel

Sim given did not show any signal even after getting confirmation message about successful porting
After repeatedly switching on and off it shows no service

I went to retailer who gave another sim after taking money for the second time and told to wait for 4 hrs, after waiting for 4 hrs sim showed signal and requested to restart. After doing so again no service. 3rd retailer checked and said sim swap us under process and we can not help till the process is over. It's a very pathetic service by airtel and from past 48 hrs there is no service and no proper response from customer care

Please do the needful

Alternative no is [protected]