kioti dk 55 hyd oil in engine oil

My tractor engine oil keeps taking on hydrolc oil. I had a guy overhaul the pump but the problem still exists. Now he won't call me back. Wasted $900 bucks Any advise will be welcome Thanks

Oh boy never expected this one. I have a 2013 DK50. I was ready to do 400 hour maintenance on the tractor when I noticed an oil spot under the tractor in the vicinity of the engine oil dipstick. When I checked the level it was completely full! The dealer picked it up and concluded the hydraulic...