Yeah, that was one of the most painful acquisitions for me personally. I went from practically no issues with Fios for years, and at least reasonably responsive service if there was an issue, to literally the worst customer service i've ever dealt with in Frontier. The billing issues... oh the billing issues were terrible. They were charging me more than double for three months, each month i'd call and tell them to fix it and fix the prior months, and I wasn't paying until I saw a fixed statement with the correct amount owed. It didn't get fixed until 4 months in I filed a complaint with the BBB.