Bookies love it when you place multiple bets. That’s why they offer so many enhancements (odds that are increased in between) and money-back specials with multiple bets. After all, any kind of bet with more than one outcome reduces your chances of winning.
Although you get a few wins from these bets; the bookies will generally leave you alone because they assume they are going to make money from you in the long run.
There are some bets that bookmakers dislike, such as singles, for example. Or bad each way bets (each way bets in races where a short priced favourite is running and bettors are more likely to take advantage of the market) and each way bets on relatively short priced selections (3 on 1 or 4 on 1 shots).
These are some examples of bets that bookmakers are not happy about and – even if you are losing – can cause restrictions on your account