Quite confusing but I agree with smurf that the op has cleaned for the residents, now the landlord has instructed a "factor" to do the same work - the big question is what paper trail have the residents got and was it there obligation to get the guttering done, or did they have a service charge system paid to the landlord who now has spent this on having the work carried out, after all this area is his responsibility to maintain.
Darran