Almera airbag warning light flashing???

[singlestud]

we recently brought a nissan almera and later found it must of been in a slight bang as it had some issues but just been mot'd which we found out had been a dodgy MOT and the garage for free of charge are doing all the work,the one problem they cnt resolve is the airbag warning light is flashing,they told me drivers is fine buy passenger one may be missiung,but they say this isnt an issue on an MOT aslong as drivers is ok?is this right or are they mugging me off?thanks