Mpokket loan related

Sir, It Is A Huge Matter, On 12 January I tried to take loan amount of Rs.2000 but i got more money than i need , for their technical fault they gave me extra money.. I came to know that they are facing technical issue after receiving a mail from their side. Now they are asking me to pay whole amount along with interest and penalty chagres.. It was their fault but now they imposing me. Forcing me to pay whole amount, several time i wrote mail that i will pay only principle amount rs 7000 but they asking again and again to pay with interest and penalty charge.. And now sent a mail that they are putting me o a notice.. They are harsssing me.