Complaint Review: wal mart family mobile by t-mobile

i bought 2 units of cellphones  2nd week or 3rd week of august  ,then after 3 days of purchased i returned it to them because the phone has no service and the other one has no signal or reception,thats why i retuned it to walmart where i bougth it,and now october 15 ,2013 i recieved a bills saying i need to pay $ 144.80 ,but i returned it to them at walmart in spokane washington in wellesly branch,need help please thanks 

                                                                    ricardo ramos

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