In reading your review, it is apparent you are having issue with your unit shutting off due to the inlet screen clogging up .
I am sorry you are having any issue with our product. This model water heater does have a blower on the combustion chamber to aid in efficient firing and getting the best economy. The filter screen is there to keep a component (pressure switch) from getting plugged up causing it to not allow the unit to run. Dusty environments, such as laundry rooms, can cause the screen to plug up quicker. You are correct a periodic schedule of cleaning is required to ensure your unit continues to operate without issue.
I cannot find a call record for your unit so I cannot answer whether you have labor or not and what if anything has been done for the cover issue. I am sorry for any long call time waits. The day after a holiday a weekend we do experience a higher call volume.