Paytm Mobile Solutions — Unable to login 1

Address:	Gautam Buddh Nagar, Uttar Pradesh, 201301
Website:	www.patm.com

I want to change my paytm registered number and for that i submitted otp's sent to both the previos and new mobile numbers. But i am getting an error message: "this mobile number already exists with another account".

But i dont know which account they are telling about. I tried to contact paytm's customer care number for more than three times. But they just put your call on hold and never talk!!!

And now i am facing a huge problem because all my money is stuck in paytm wallet and i cant use it. Please resolve the issue asap.