Casa docs CD
If what you are saying is correct - and you have documentary evidence of the discrepancy between the advertised product vs the delivered product, then take the affair up with the relevant consumer authority.
CASA have to learn that they are subject to the normal rules that govern the behaviour of businesses / contracts, including the fact that they are liable for any damage they cause or defect of their delivered product. Thats the price they pay for going down the corporate 'consumer pays' route.