Ultrabot is a waste of money

My goodness the Ultrabot Robot Vacuum is such a waste of money. it will start a clean then reset the map, or obsess over the same location. I then try select rooms and it will continue to clean rooms not selected. This morning it cleaned my bathroom 5 times and then would finish clean even though it hasn't gone into any other room! I have had enough. Hardly 3 months and its a waste! R4500 down the damn drain! DON'T BUY!!!!