Increased prise by $1000 after I'd paid deposit!!
I spent months back and forth organising a long private trip, got a final quote, paid $200 deposit, and then when they requested the final payment had increased the price by more than $1,000. This shot the price up into one of the most expensive companies quoted, they argued that this was my mistake, despite a clear email chain - and then refused to refund my deposit - despite the fact they had broken their part of the contract by changing the price. Really bad practice!!!