3 phones/$40 a line

So I got 3 phones and 3 plans with the Verizon lady at Walmart. The estimated monthly charge was $48.46 per line. The lady said she was having trouble with her computer and said she needed my wife's information as a secondary signature and said to call Verizon and they would have no problem combining our plans the next day.  I called and the supervisor said he couldn't combine the plans until after 30 days. Now I have 2 bills for $127.38. How do I get my plans combined per my original agreement with Verizon  so I can pay the correct amount, not double?

Re: 3 phones/$40 a line
Customer Service Rep

Thank you for reaching out to us today. I would be happy to assist you. Do you have a prepaid or postpaid account?