I am having to remap the house at least once per week as the machine constantly gets a ghost image of the house and then the vac cannot do its job. I can't use the backup map as the ghost image gets saved over it so it is useless.

please could this issue be rectified or I would like a full refund. This machine is not even a year old and has caused far to much frustration. 
 

at this stage I have lost all confidence in the machine.