Holiday Inn

I worked for holiday inn express for 3 yrs, I was never late.i got fired cause I wouldn't go int rooms cause they were full of mold.we had 42 rooms out of order due to mold contamination and I have pics and videos of it.the place was so bad my dr told me to leave that establishment.but they fired me instead.now they put a hold on my unemployment.is this how you treat your hardworking employees