Callous disregard to causing damage to my house

I got Aerial Installationz to install a DSTV Explora and dish at my house. For some unknown reason the installers took roof tiles off my roof and then forgot to replace them. <br> <br> During a storm a few days later extensive damage was caused to a newly decorated room because of this gross negligence. As the redecorating was a surprise for my son who is returning after 8 months of working abroad, this damage has caused an enormous amount of emotional distress for my wife and myself as your surprise now lies in ruins.<br> <br> The company's attitude was \It's ok