Complaint Review: New York State Health Marketplace

I first called NYS Health Marketplace and Fidelis Care in December and went online, to cancel my daughter's Health insurance for January due to receiving new health insurance from my employer. 
I then received a bill for January for my daughter's health insurance from the NYS health marketplace.   I called again to tell them that I already cancelled the insurance (the bill also stated that insurance would be cancelled effective date 12/31/16 if a payment was not received).  The rep I talked to said that my daughter's insurance was already cancelled effective 12/31/16.
Today I just received another bill, requesting payment for 01/16,02/16 and 03/16.  I called again today. 
This time the first rep said there was a "glich" on the account and would cancel the March insurance but would transfer me to the "Account review dept" to cancel 01/16 and 02/16.
The next rep I talked to told me she could only cancel the 02/16 but I would have to pay for 01/16 coverage. 
I tried to explain how when I called in January that the rep told me at that time the insurance was cancelled on 12/31/16.
While I was trying to explain my frustration, she kept interrupting and stated I was being unprofessional.  When I asked how was I being unprofessional, she said I was yelling.  I am sure my voice was louder than normal, I had been on and off hold for over 40 minutes and this was the third time I had called regarding this problem.  I stopped talking and said ok fine and she then hung up.  Must be nice to have a job where you can hang up on customers and constantly interupt them while they try to talk.

So even after all that time I spent on the phone, I am still at square one and owe for insurance I have tried to twice before to cancel.
I can't believe the hoops I have to jump through to try and cancel this insurance.  It is very frustrating especially since the rep I talked to on 01/14/16 told me it was already cancelled on 12/31/16.