I’ve received one call in my life from such a relay service. I worked the phones at a retail shop selling specialty sports equipment. It was a normal call aside from some delays due to the typing and a brief introduction to explain that the person on the call was a middle man. It’s great that these services exist.
A lot of stores don't accept them anymore because of scumbag scammers abusing the system, leaving us dependent on a friend or family member to make our calls.
It is. But when the front line person has received a bunch of spam calls they start hanging up when they hear the relay disclaimer at the start of the call, whatever the law says.