George invested a sum of money of Rs. 13000 in a scheme that works on the principle of compound interest. The rate of interest is 20% per annum. After 2 years, it was notified that the scheme will now work on the principle of simple interest. After further 2 years, George withdrew all the money from investment. Due to pre mature withdrawal, a penalty of Rs. 1000 was charged. How much money will George get?