Called me saying my landline was being cut off because nbn is in the area! Don’t have internet or home phone

NBN broadband trying to get in contact with me, now going to shut off my NBN.

Got a call from this number, left a message about cutting off landline and internet bc nbn was in the area. Tried to call back bc thought it was genuine wrong number, but got a message that the area I'm trying to call is unavailable at the moment. So nfi what's up with that one.