Paytm Mobile Solutions — Charged amount twice

Hi
I have been charged twice from the CLIX international referring to paytm Postpaid services as they said they will clear the dues as I was not using the number for past 2 years they made the due of 10000. Once they charged me 1000rs telling that they will close the case and the next day some lady called me abused me regarding this consent after 2 3 days they again asked me to pay 1500rs and paid again this time everything was over the mail but after I paid next day they start calling me again to pay the dues. They promised to send the NOC and clear all the dues but they are scamming.