Bookit.com Round Trip Flight, Return Flight Booked WRONG Date!!! Doubled the Price!!! Internet

My flight was supposed to get me from BWI to LAS on 4-6 and return on 4-9. This is the criteria I specified when booking my flight. My itinerary, however has me returning 12 hours after arriving in LAS Vegas! Customer support, after more than 2 hours of hold and transfers, insists it was my own fault. I do this for a living, I know how to book a flight online, it is the only way I book flights for myself or my clients!

Bookit.com will not be getting any more business from me, or anyone I represent. Avoid this SHAM service!!!
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Following was added to my complaint per a request by bookit.com.  They removed their request since and have ignored the complaint entirely.
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Sent to Bookit.com per their request: 

 As requested in your reply to my complaint, here are the details of the booking in question. 

 Booking ID: XXXXXXX 

XXX X XXXXXX 

 

I have already spoken to two supervisors in your customer service dept., both of whom insisted this was an error on my part. But it seems I am not the only person with same or similar complaints about your company. Perhaps it is time to take a look at your flight selection and purchase flow. I had no choice but to change the flight with bookit.com, this cost me an additional 150.00 fee in addition to the flight's price increase of 149.00.