Reverse lights are coming on when in drive

Thanks have taken your answer on board contacted insurance who says that thou the auto did a inhibitor switch replacement which was proven not the cause, I now need another excess payment before they will come to the party for me to take to someone with more knowledge than the registered auto I took it to where the insurance said for me to take. Bit of a carryon with me getting nowhere contacted said auto who said they will relook at problem but there could be a cost and they will ring when there is a place for me to come in which I still waiting and on it goes
the pro is the same getting more sluggish budgeted for oil filter replacement looking at battery life