Anyone who rents property quickly learns that no good deed goes unpunished.
Collecting back rent is very hard – no incentive for anyone without superb credit to pay – just collect as much as you can, hand deliver the 3 Day Notice to Pay Rent or Quit for the balance, if they don’t pay timely initiate Unlawful Detainer, that should get their attention.
Once in a blue moon money will be paid, failing thta proceed to eviction and find new paying customers.