Promo Expired Considering Leaving

Hello,

Our promotions expired this past month and our 2100/300 plan has gone from 90 to $113.  As a current customer I can "switch" to a new 2100/300/5Year plan for $105 (same as a new customer).  But if I want to go to the 1100/300 plan it would cost me $100, vs a new customer getting it for $85.  

I would like to get the 1100/300 plan for $85 please.

I already own my own modem (CODA56).