PaySense — calling my contacts and harassing them

My registered email id is [protected]@gmail.com and registered phone no is [protected]. I am facing this issue that they are calling my contacts and harrsing me, and there were few contacts whom i dont even haven direct contacts. Not sure how she has the access to it. If you guys take an illegal route to collect the outstanding, not sure how the company will sustain. Anyhow, if this person does not stop calling like this, i will be writing to the banking ombudsman about this. I have substantial evidence now. A lady veena [protected] started calling and abusing them. She uses a very filthy language.
Please let me know if it can be resolved before i go to the ombudsman.