I have been using kiwi.com regularly for several years with little complaint other than that I can often find cheaper flights by booking directly through the airlines. My latest experience, however has entirely changed my opinion of the company, and has ensured that I will never again use their site for booking anything. Kiwi.com recently 'upgraded' their website, and somehow the update caused a glitch which caused their calendar (used to select flight dates) to show the wrong dates. In this case, it showed that in 2018 June 19th was a Wednesday, when in fact it is a Tuesday. That caused me to select the wrong date for my departure. The same phenomenon occurred as I was selecting the day of the week upon which I wanted to return. I then continued on and paid for my ticket, and within 15 minutes of booking the flight I realized that a mistake had been made. I was specifically picking my trip based on the day of the week in order to fit around work/school schedules, so of course when I noticed (upon looking at a normal calendar) that the dates I had booked were incorrect, I immediately contacted customer support in hopes that they would help me to change my flight or get a refund so that I could rebook. I carefully explained to them what had happened, and even provided them with a screenshot documenting exactly what was going on with their calendar. After over 3 hours (95% spent on hold) getting passed around from one incapable (although mostly reasonably friendly) customer service representative to another, I had achieved absolutely nothing. Basically everyone just told me that I should take it up with the airlines, and seemed content passing on the blame. When I reminded them that it was the fault of kiwi.com, and not the airlines, at best I was told that they would 'investigate it' to see if it was indeed their fault. Somehow I couldn't get anyone to acknowledge the photograph which was clearly demonstrating the glitch on their site. At least 2 of the representatives tried to tell me 'oh, well maybe it's because of the time zone change.' It was then that I fully realized that the people I was dealing with were not capable of performing their jobs. I'm sorry, but if you don't know that in 2018, June 20 is the same day of the week in EVERY COUNTRY and EVERY TIME ZONE, then it's going to be very difficult to make any forward progress with this dilemma. Thanks to the incompetence and stubbornness of kiwi.com's customer support and a severe glitch with their booking system, I'm out $128.49 of hard earned cash and over 3 hours of my time... oh and I think I just found my first gray hair.