Quoted from chad:
Went to the main UPS to send out a package and evidently they stopped taking cash in in September 2017. I asked why and he thought because they are at the airport but wasn't sure.
I personally do not want to go down the cashless road.....
I dont like that either. I would take my business elsewhere and let them know why (not that it will help and I see more places doing this all the time).