Ramkumar — aavin milk

I am buying aavin from 1964. I am buying aavin green(booth 132)milk. When the milk turns in to curd it becomes like a(tooth)paste. We are unable to use as curd and we have to make it as buttermilk and use it .I checked up with people buying from nearby both also. They also have the same complaint. It is not happening with when we use private milk. Please respective authorities see to it and correct the mistake immediately.