Job Search Net — Legal authority asking me to pay money again

I had done the work but they say it have mistakes. They kept me message at 12:30pm they asked me to pay money in just one hour or else they told me to meet at the court. I have paid the money at afternoon 1:25pm at the evening again the legal authority kept me message at 5:38pm like these
IN SPITE OF GIVING SEVERAL REMINDERS YOU ARE UNABLE TO PAY THE DUES EVEN AFTER SIGNING THE CONTRACT. COMPANY CAN PROCEED LEGALLY UNDER INDIAN CONTRACT ACT 1872. SO CLEAR THE DUES TO AVOID ANY LEGAL PROCEEDINGS. ALL PROCEEDINGS WILL BE PROCESSED IN SURAT (GUJARAT).

REGARDS,
LAW FIRM
GUJARAT
(EXPERTISE IN CIVIL CASE)
I had send money to these transaction Id T[protected]
I had kept the photos for the which I had send money
They told if I send money they will cancel my agreement.When I called them they say they cancelled the agreement but I didn't receive any mail for cancel of agreement for warning (i.e., for paying money) I had get the mail to pay money.