WD My Passport Smart Test Failed, Need help

Hi, My New 1 TB Portable Harddisk SMART info is showing below details
Read Error Rate------ Current 200----- worst 200----- Threshold 51----
Spin Up Time -------Current 164-------worst 160-----Threshold 21----
Reallocated sector-----Current 200-----Worst 200----- Threshold 140-----
and WDLG test Faild(showing too many bad sector)should i ask my seller to replace it for new one?
Please suggest me as early as poosible.