New yo byke inbilt old battery

Location/place: kanpur

Name of company/service: R K MOTORS KALYANPUR

Dear sir,
this is jyoti singh i purchased yo byke in 11/march/2012 from R K MOTORS KALYANPUR Kanpur Head of R K MOTORS cheated me he is inbilt old battery in new yo byke i found this at after one month and Mr. R K Cant replace these battery .pls sir help me.
thanking you
jyoti singh
[email protected]