It is risky to use anyone blindly...and there are entire discussions on how to vet vendors and it usually starts with leaning on other investors in your market.  

And FWIW, after managing tons of cleaning vendors for HUD and others in my past life, my approach is that you get what you pay for, that you should pay a little more than the average for your market if you want your cleaner to be a partner to your business (and that such will pay for itself), that you should thank and appreciate them often, that you should make them feel free to reach out for bonus requests but also should decrease the frequency of such by not reducing their comp when they encounter easier-than-normal cleanings, and that you should pay them immediately after the cleaning.

Sure, many of the issues were warrantied and covered under the builder, but you would have to schedule with certain vendors making residents wait weeks for repairs.

The latest conversations at the city council meeting was about the various aspects of enforcement, part of the plan is to require the vendors to place Caps on accounts that rent in areas where this legislation has passed. 

-reliable "handyman" who can deal with minor repairs (make sure licensed and insured)-tenant self-inspection app or use third party service for inspections-vendors to service home functions, e.g. plumbing, electrical, HVAC, etc.

It would often take multiple attempts to contact a vendor to see if they could handle a job.

I'm kind of surprised that vendors will keep providing services if their bills aren't being paid?   

I would say, as a new investor join one of your local REIA events. https://www.facebook.com/TheCharlestonREIA/Charlotte is a 3 hour drive from Charleston but the NCREIA is a pretty good one to join as well. https://www.facebook.com/NCREIABoth the Charlotte and Raleigh meetings have a good turnout of vendors and attendees.

I assign the work to a vendor, and that vendor is notified by text and email.

They want stellar performance on: 1) listing, 2) screening, 3) leasing, 4) inspections, 5) maintenance, 6) lease enforcement, 7) communication, 8) liability mitigation, 9) tenant management, 10) market trends, 11) technology, 12) move-in / move-out process, 13) handling/disposing of tenant property, 14) resolving disputes, 15) vendor relationship and management, etc.