Back to the cable/internet company

My husband fixed the internet problem, turns out the guys who installed it ran the two cables into the house, one for cable & one for internet but instead of connecting each line to the appropriate receptical, they spit one cable with a splitter and sent one to internet and one to cable, my husband starting looking around and discovered this mistake. When the cable guy (who sounded like someone straight out of the back of a kentucky hollow-"holler rat") called to confirm his appointment to repair my service, at first I thought someone was playing a joke on me, (he must have gotten his SSI check cut off and had to start to work again) when I finally realized it was the cable guy, I explained that we had fixed the problem ourselves -he sounded happy and hung up. I have a feeling though that because my husband took upon himself to do the simple task of removing the splitter and hooking the cables into their appropriate place, that in the future if we have a problem that requires repair, they will bill us and said that they have to charge us because any repairs that are done by us instead of them, voids the free repairs. hah!