my toaster is not working as the pop up is not working ?

i had bought this Russell Hobbs toaster model number
RPT 603 last year from the ebay web site and it was working fine
till yesterday , but the same is not working as the pop up has stopped working , i have the warranty for two years but do not have any contact number please let me know where and whom do we get in touch with
my cell no. is 9869475314 and i am in mumbai