Digitcom Service constantly calls me. Everyday I receive at least one phone call with their phone number 1-213-710-8160. When I answer I sometimes get nothing at their end. Other times I answer I get a recording saying all operators are busy, please stay on the line. When I stay on the line it eventually hangs up. I cannot tell them to stop calling, no humans or instructions on their end. I want this to stop. I have signed up on the do not call registry, they should not be calling me!