had pipe under basement tub drains replaced with pvc, still having leaking on floor?

Question

older home, about 80 or so, was cast iron pipe and now is pvc leaks whether or not laundry is being done

Answer 1

the leak is coming from somewhere else and running along pipe to floor.

Answer 2

Bummer, call a plumber to do it right.

Answer 3

get person back that did the work it should be garanteed