Damage to Belgian linen blazer

My husband took his Belgian linen blazer to be dry cleaned. There was a specific stain that we mentioned and we were told they may not successfully get it out and that he must sign a disclaimer that he understands the stain may or may not be removed. Upon collection of the blazer we noticed bobbles on the sleeves and a whole on the inside of the blazer. The owner claims the disclaimer covers him for such damage too. Our understanding was that he was signing if they could not successfully Remove the stain not for te damaged cause during the dry cleaning process. Absolutely disgusting service... I note this is not the first such case... Warning do not use Nanucci.