How to get a new SIM with the same number when it is broken?

I got a new airtel MNP SIM. I took the SIM to the local shop to cut into a micro sim. The shopkeeper cut the SIM and now the SIM doesn't fit my iPhone 4.So I want to know how to get a new SIM with the same number

Go to the carrier

Go to airtel office and tell them your airtel micro sim is broken and fill the form

You can get the new sim with same number. Go to airtel shop or dealer and give them your current mobile number and let them know your sim is faulty. In most cases sim replacements are free.

Go to your service provider/carrier and ask for a sim swap, how hard could it be?

Contact your carrier. The telephone number is not locked to a specific SIM and the carrier can assign any number to any SIM.

Talk to Airtel. That shouldn't be a problem.