Whoever you spoke with was wrong. Dead wrong. Here are some resources, links and definitive answers for you:
Here is a Direct Link, click it, call and they’ll give you pricing, dates / times and an excellent customer experience: Antenna Installation | AirTV
They’ll roll out a truck, do a quick site survey to determine how best to direct it, scan your channels and set you up. I’ve seen this personally, at the homes of friends who have hired them. Here is a review from a third party: