Citation Excel (C560XL)
Communication Breakdown; Confusion; Situational Awareness; Time Pressure; Workload
ATC Issue All Types; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Fuel Issue; Inflight Event / Encounter Weather / Turbulence
Air Traffic Control Issued New Clearance; Flight Crew Diverted; Flight Crew Requested ATC Assistance / Clarification
Weather; Human Factors; Procedure
While enroute to ZZZ; a line of storms formed completely shutting down the arrival into the area. We were issued holding as published at ZZZZZ; FL410; then 390; then 400. In conferring with passengers about our limited options; we decided the best decision was to divert to ZZZ1; where the passengers could catch a train [to their destination]. ATC  was informed and we were given a substantial vector to the south. We still had plenty of fuel so we weren't concerned and figured we needed to get to less busy airspace in order to descend. Eventually; we were given direct ZZZ1 from ATC and started a left turn to the north to comply. It turns out; that even though we informed them we were diverting to '[city]; [state]; [phonetic identifier]' - a Controller entered [same city]; [different state] - [different phonetic identifier] and was taking us there. The controllers just told us to stop our turn and gave us a little bit more routing into ZZZ1 and there weren't any traffic issues that I know of - but ATC wasn't expecting us to do that. It ended up not being a big deal; but wasted a lot of time and could have resulted in us having to divert again due to depleted fuel reserves and weather moving in to ZZZ1. We dropped off 4 of our 6 passengers at ZZZ1; and after taking on fuel and a weather/ATC delay on departure we proceeded to ZZZ2 where the remaining passengers needed to go.When given the significant routing to the south; we were suspicious but didn't want to speak up because many other aircraft were holding and diverting; and the frequency was very busy. Very odd routes like that are semi normal in [this area's] airspace anyway.
C-560XL flight crew reported being incorrectly re-routed by ATC.