frustrating work life

I am really finding work hard this week. My employers are soooooooo unprofessional. I am used to working for companies who for example have a problem with their orders or equipment breaks and they usually dump the nasty job of explaining the problems to the irate customers onto me it seems. This company though do not do that. Nice not to be dumped on but they just dont tell their customers at all which means we are getting a very bad reputation for being unreliable and I have to say the company deserves it! thats besides the fact our products are second rate in quality anyway. Obviously this means if I answer the phone at all I get shouted at and I have to be honest I dont blame em! On top of this I was told in mid October we would be on holiday from 19th December. As of 4pm yesterday we are apparently now working next week. I wouldnt really mind but its very short notice and I have actually arranged to do stuff every day up till xmas! No idea if I have a leg to stand on if I query it since as I have previously mentioned I have no written contract! Might have to check this one out tho cos as of end of today have been working here for a whole year which does finally give me some rights. Friday 19th is payday so shtum till then! Bombshell brewing!