Gujarat Gas — Breakdown of our societies garden wall during installation of pipes

I am resident of nallasopara west. One of the contractor of Gujarat has limited damaged and break our garden wall during installation o[censored]nderground pipes. In intial stage he told us that he will pay the entire amount for building that wall again but after 3 months and completion of pipe fitting he refuses to pay the amount so it's my request pls call me n sort it out other wise we have to take legal action my contact no [protected]