Denied

i went to work and they said NO church is not a life changing event. i was so upset  how can they say no. all i was asking is to work 4 hours on Sunday and Wednesday and they didnt like it. well i looked up online and it said it was discrimination on religion  and i am so upset when i think my family hates me for going to church and now my job is saying no. grr!! what should i do . but i am going to work and talk to the manager and if that dont work go to the store manager and if that dont work go to the big boss wish me luck!~