Does your job make you want to kill yourself?

I work in customer service,the complaints department,for a major communications company,basically people ringing me up to roar the head of me,and me telling them there is nothing we can do for them(its usuall the customers own fault for having such a huge bill),soul destorying but you get used to it,but due to recession and other sh*te internally the call volume has dropped dramatically and so you have 20 people sitting there twiddling their thumbs dealing with about 10 calls a day which is tiny,we heard something was coming and were expecting the worst as in lay offs with reduntancy(secretly I was excited about this as I had an excuse for being unemployed),but alas it was a pay cut and big reduction in the bonus,be honest this is just the start,Id say lay offs are on the cards 6 months down the line,its just the union keeping us going here at the moment,But since then it has been unbearable to work here,so stressful been told we not making business and giving good service when its not our fault customers are leaving or not ringing in,or when not busy been made ring customers with past grievances to ask them 'are they ok now,and is there anything we can do for them?',its far more boring then it was before,and only reason I stay is because I have a young family,although Ive been doing some math and Ive actually worked out that I could survive if I had to go on the dole,we wouldnt be as comfortable as we are now,but we'd be far from broke either,so Im thinking strongly on quitting,I know a jobs a job,but I have to think of my mental health,and it would nice spend some time with my kids,who I rarely see during week due to me working till 7 every night