CVS Caremark CVS Caremark refuses to pay Phoenix Arizona

When ordering a prescription through WalMart.com on 6/06/13, I incorrectly assumed that my CVS Caremark insurance information was on file because I deal with the local WalMart.  I was charged $151.78 for a prescription that should have cost $62.64 through my CVS Caremark insurance.  WalMart.com told me I would have to file through CVS Caremark to get the difference of $89.14.  CVS Caremark would not give me anything because WalMart.com filed a claim through them.  WalMart.com doesn’t even participate with CVS Caremark so there is NO WAY they could have filed a claim through them and were not reimbursed by CVS Caremark.  CVS Caremark refuses to reimburse the difference of $62.64.  CVS Caremark will do anything possible to not pay for prescriptions for paying customers.