I've had such bad luck with accountants....I suspect that they've billed you retroactively for the entire year - this happened to me once ... I started using the accountant mid-year, they did 15 minutes work and then I got a 2000 guilder bill back-dating all the empty months that I didn't even have my business (in the same insurance companies do to newcomers) - I was able to reason with them (ending in me screaming about what unprofessional wankers they were, which they naturally didn't seem to care one bit about - the manager laughed and sarcastically said "Have a nice day!"- ah, Holland! Of course, now I lived here a while and know that they have no sense of customer service, pride in their work or caring to retain clients)
Let's see- my next accountant simply forgot to do my taxes, so I had to go down to his office and get all my papers - 2 weeks later, I got a bill for 10 euros (lol)....
My next accountant was OK for 2 years, then he vanished mysteriously - claiming to be in Thailand and Suriname for family emergencies, but dodging any calls and emails unless I phoned from a number he didn't know! Although I was lead to believe he had done my 2004 taxes, it turns out they were never done and I got a letter from the Belastingdienst giving me 2 weeks to get them in order!! After many threats and harassing him (just short of death threats), I managed to get my records back from him, which wound up being incomplete- half a year of receipts missing!!
My current accountant costs double what the others were charging, but he actually does his job, so I stick with him despite the obscene bills.....it's funny that the standard I now look for is that someone I hire will at the very least DO THE JOB!!!
Good luck....