Poor administration

I was shocked to find out today that I have default on my Netstar account, when I took a product that had a 3 year contract in 2018 and they were trying to bill me in 2022. Over and above all of that I received nothing in writing, have been working abroad so cannot be reached via cellphone, makes me wonder why they collect all this personal information when they don't even make use of it. Luckily I don't have a car at the moment but I'll be sure that I stay far away from this company when I do get one again.