See my take below and good luck.

1. microwave working but not warm enough - I don't want to pay more electric bills 

   - ask him/her to set/select higher power level of the microwave

2. dishwasher working but has to run 4 times to be clean - I don't want to pay more electric bills 

   - ask him/her to rinse the dishes before put them into the dishwasher

3. water dripping of bath tube faucets - I don't want to pay more water bills  

   - have a look yourself to see if it is true and it might be a simple fix

4. some species is active in the attic 

   - ask him/her to record the sounds (say you need it to show pest control company)