Customer stated kitchen sink still leaking. Found kitchen sink fully backed up causing a leak in the trap assembly. Removed and inspected further to find line was clogged in the wall somewhere. Reassembled trap assembly to resolve the leak and removed clean out cap outside of home on to find it was filled with grease. Managed to clear grease from kitchen sink to that clean out but after multiple attempts to fully clear the grease further down the line I found there was still some remaining. Job today got the kitchen sink flowing again but the grease clog is still present and will need to be addressed to fully resolve issue. I recommend hydro jetting the line to fully clean out the grease as I only punched a hole through it as a temporary fix. Work on invoice is completed how ever the job is not completed until the attached estimate is completed. Estimates ready to send.