That is awful, my employer actually gave out some of our "old" desk chairs, so I took one with an arm missing, I don't use the arm rest, so I took out the spare arm, otherwise if I had asked for my actual desk chair I'm sure they would of given it to me to use. We're technically allowed in the office due to the type of work we do (defense contracts) but mostly work remote, I have only heard of a few people going to the office for anything they need. It's sad when companies don't treat you like adults.