There are two types of good/successful contractor business model IMO, one that do super quality work and have great customer service but they charge a premium for what they do; then second one, maybe it's the one that you encountered, one who's very efficient at achieving an end result (I'm gonna deliver a quality mounted TV for you but don't ask questions) for a customer and charging a very affordable price but expecting to get-in and get-out fast with no hassles, that's how they can offer the affordable price in the first place.

@Patrick Philip pay the money to have it delivered from your supplier.

Is it really that hard to call Lowe’s, Home Depot, Sears, or any other big box store in the country and say I need a need a new appliance delivered to this address, here’s the contact info?

you just want proof from USPS that your notice has been delivered to her address, you do not want it returned to you if she declines to sign, be redundant in scanning the same notice and email it to her her. 3 - Contact her either personally or over the phone, and voice your concerns let her know why you need her out by that date and what a bad position it would you put in if she didn't.

The other option was for them to stay at home and refrain from putting too much water down the drains (no washing clothes, no showers, no flushing toilets) and we would call for a "Honey Bucket" porta-potty to be delivered to their front yard.

They'll also deliver, install and take away your old appliance.  

Most of which I made the seller deliver POS violation free but your miles may vary on that one.

For example, @Alvin Taveras has been putting out a TON of content on market trends and updates, this resulting in branding himself as an expert resource in the market....I can promise you buyers will have no clue what logo is behind his name, but will remember him as someone that delivers consistent market updates and when they have a question on whats happening in the market they will go to him....that is a brand.I have met with hundreds of agents, investors, contractors, business owners that all have different logos, color schemes, and tag lines and I don't remember a single one of them, but I do remember how they made me feel.My recommendation is to find your niche, then own it.

Be ready to take notes because Ken will be delivering you a master class in real estate investing!

Looking over the laws in Michigan you can serve someone by; delivering in person, or certified return receipt.