Hello,

You can change your branch only if you satisfy the college CGPA cutoff for the first year then only in 2nd year you can change your branch. By paying some money won't make your work. This is not the way of doing work. The college has some rules and the way of giving money is illegal. Better not think of it in future. Try to do things by  your work and qualifications. Money is not the way.

Hope it helps.