Apparently if you really can't swallow tablets it's okay to cut up in to a few smaller pieces and swallow them one by one, at least that's what the pharmacist told me. Crushing them or mixing them with water is not advised because they will be absorbed more quickly and that can be unpleasant. Is what you take modified/extended release? Because then you really can't do anything with them, as you would be getting a huge dose of something all at once, that's meant to be slowly released over time.
I'm not to keen on tablets myself, but the the ones I take are all tiny and I can easily swallow them without water. I was too refused liquid forms, but I was actually told it's because what I was taking in liquid form would be 'ridicilously' expensive for the NHS. I despise those huge 1000mg caplets you can get. Just as well what I take regularly is not an issue in its tablet form due to its miniscule size.
Being refused psychiatric medication is stressful for you, the patient, and your GP should be really more understanding. I would definitely complain, or just change surgery. If you go on the NHS website and go on the comments section, you can look at the reviews on other GP surgeries in your area and pick one.
Other than that, I find you have to be very pushy with doctors to get them to listen to you...basically just don't leave until you have reached a conclusion or have been offered a solution, don't let them fob you off. Persevere, keep ringing them, remind them of the issues with your prescription. Speak to your consultant too, if he's being careless, if you keep ringing the consultant's secretary, they can't say they didn't get your message. If the secretary says that he'll get back to you tomorrow, and he doesn't, ring them again. And again. As long as it takes to get him to speak to you. Don't let anyone fob you off with stupid excuses, it's their job to help you, you are entitled to be treated right.