Gokul Milk — Quality of milk gone down

Address: Bhandup west

I have been using gokul full cream milk for many years . This milk is known for excellent cream and best quality of milk, which results in getting excellent butter and good tea respectively.
But for past 2 months I am finding difficulty in procuring butter and seems quality of milk is has gone down . The taste of milk has become thin.
Pleaser look into the matter at the earliest as I don’t want to move from gokul to any other brand . Country delight milk is equally good as gokul which provokes me to switch over .
Thankyou in advance .