Over the past 15 or so years I've used probably 100 different bookmaker sites.
Over the past 6 months or so I've experienced by far the worst site I've yet encountered for ability to get a bet accepted.
I'm not talking only about limitations, although they are almost as bad as any on that front too, but about software failings such as telling me what the max. stake is but then failing to accept it and simply repeating what the max. bet is.
Their support is also appalling, frequently not reading what I've said and coming back with irrelevant responses.
The site I refer to is 10Bet.com