Customers complained about charging for Wi-Fi, connection speeds, poor customer service, getting spammy phone calls and billing problems, according to the survey. “Shame that @HiltonHotels still continue their rip off wi fi charges,” quipped Twitter user Paul Clayton. Crimson found five hotel chains were runners-up to Hilton’s 17% negative rating. With negative scores of 14%, Marriott, Sheraton, Westin, DoubleTree and Crowne Plaza all tied for second place. Get the full story at Fortune