Strata neighbours renovation

My neighbour has been renovating for 4 months. It includes new bathroom and kitchen etc.there has been considerable hammering, drilling etc in the bathroom which has a common wall.The shelf to hold shower goods fell off. The worst damage is the pipe which holds the shore connection which has fallen off making it not possible to have a shower without holding the shower hose. I wrote a friendly letter to the owner asking if the handyman on the job could fix it. The reply was it would cost me to have the handyman fix it. I think it is the neighbours responsibility but would like your opinion please. Thank you.