Poor service and *****s your money

I bought a bed at Optimum beds, a year later it started to make squeaking sounds and started sagging. Phoned the company and their rep where so rude. Phoned the manager Cynthia and she send a river to collect the bed, on the day he collected the bed he already told us that they won't replace it because the manager tells all clients its because you sit on the bed. In the afternoon Cynthia the manager gave us feedback and guess what was her response?.....the bed is damaged because we sit on it.....how on earth must you get on your bed? Jump is not a option, you first sit down and then you place your body in sleeping position. She refuses to replace the bed.