Doubt regarding an offer & visa change

hi ,
i am amrutha. i got an offer from hmc qatar after attending a local interview in qatar.
im an RP holder of qatar. my husband is the sponsor. the initial offer letter i received is mentioned as overseas contract. but now they changed the contract type as local & reduced the benefits like housing & ticket as i am having qid. if i cancel and exit from here any chance to convert this recruitment as overseas? or after joining if anything happened to my husbands job can i change to hmc 's sponosorship? will they provide the benefits?

please respond back if you have any idea