Leather Gallery already broken in 6months time

I bought couches from Leather and Gallery last year July and to my surprise the 3seater spring is broken and resulted in a flat couch....as well as a 1seater is also flat. I emailed them and they simply responded that I have been seating on on the couch repeatedly. We are only 2 in the house and normally I will be at work and my daughter will be at school.