I have a mistral MTLW7 washer and it is having trouble with the spin cycle?

having trouble with the spin cycle, it comes up with an error code on the display screen, and will not spin again, as all of the clothes are over one side. The machine has been leveled continually, but it still a prob. Now I am having trouble with the water not draining out! everytime this happens, it goes back to a wash mode, or straight back to the beginning of the cycle again i'm about to throw it outta the house and buy a new NON Mistral washing machine. PLEASE HELP..I have 3 young children who are getting really sick of hearing Mum shouting at a washing machine arrggghhh!