My Hotel agreed to cancel and apply no penalty to Nustay.com, they have this in writing and yet refuse to provide a refund, my trip must cancel due to the US travel ban, I have no choice there.
If they keep your money in these extreme circumstances then they are capable of anything, avoid avoid, use Hotels.com or booking.com who respect the customer more.
Ignore at your peril, this company will not survive with the lousy attitude and borderline cheating of client funds.