If you have submitted 3000 to the college as a admission fee then you are now admitted to the college for the course you have selected.

Now this phase is called Provisional Period. In this period after submission of the fee you get admitted but it gets confirm after the offline verification of the documents in the college. So when you will be notified for the offline verification , at that time you will be needed to have TC , CC along with result , residential documents etc by which they will check that all the info's you have provided are correct or not.

So at this moment , you need nothing to be tensed about. For frequent updates , do keep a eye on the official website.

I hope this answer helps you. Have a great day!