This is one of those situations where the court of public opinion might be a very effective tool. One of our own has been ripped off, and looking out for each other is one of the things we do.
Let's say that 30 or 40 of us take three minutes out of the day, once a week, to call Alfredo and ask him to finish and deliver those two bumpers. Alfredo would literally be getting seven calls a day, every day, telling him to get the work done. He wouldn't be able to block the numbers--there would be too many of them. Even if he were to try, most of us have more than one number we can call from.
It would literally be easier to get out the welder and finish the dang bumpers than it would be to put up with that kind of onslaught of phone calls. I'll bet a quarter that it would take less than a month--fewer than four, three-minute calls from each of us--for Economan to have his bumpers.
What do y'all say? I'll make the first call, today. Economan, we will need to know your name so we know who to reference. Who's in? Let's go get this man his bumpers.
Alfredo's phone number: 619-288-0747
Alfredo's email: firstname.lastname@example.org