Was this a full same refinish? Or was this a buff and coat? Walk us through the process. And to be clear, a buff and coat should cost $3/sf. A full sand and refinish $5/sf.

The really tough finishes add $2/sf = $7/sf.

How much did you pay and how many square feet?

This looks to be adhesion failure.

Not sure of the terminology but I assume it was a buff and coat. There was no sanding or staining, it was a quick couple of hours. I paid 800 for 1400 square feet.

Ohhhhh dear. You need a full sand/refinish now. You paid $0.58/sf for this. You paid too little for a proper buff and coat or you paid too much for a garbage application.

There is ONE other option that I can think of: Someone put down a 'temporary' finish like we see with Mop & Glo, etc. There are modern 'polishes' that are (badly) designed to be marketed to homeowners and cleaning people as a 'great pick-me-up' for floors. The problem = they are temporary and they make MORE of a mess than if you had just left the floors alone.

There is an easy way to tell which one you have: Use Windex Original (with ammonia) on a patch of scratches. You soak a 1ft x 1ft patch for 60 seconds. Then wipe it up with a cloth. Do this again. And then one more time. Let it dry x 2-3 hours. Come back to see if you can see a 'difference'. In theory, if this is polish, the windex will have removed the cr@p inside that 1ft x 1ft area. If nothing happens...you have real polyurethane.

If this is the 'polish' then you can clean your own floor with Windex (super cheap but horribly boring). If it is real polyurethane there is only 1 fix: Full sand/refinish.

The cost I'm seeing tells me you paid for polish...but you have to do the windex to find out.

I have regular ammonia, can I dilute with water?

this is the product he used

If he didn’t abrade the finish there is little bond between the old floor and the new finish.

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A deep clean needs to be done to remove contaminants before abrading and recoating. The price you paid did not cover that. It would have cost you $2.00-$2.50 per square feet. As SJ stated you need a full sand now. For 1400 sf. you're now looking at $6000.

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Sigh....The Varathane costs $80/gallon can. It covers 550sf. Your $800 was enough to cover his $50/sf wage and a coat of Varathane (3 gallons = $240).

I'm sorry but you have been 'had'. Feel free to call this person back to see if they will give you your money back or if they can offer some sort of refund. But I doubt they will answer your call. This is some 'dude' who wanted some work and caught you with a SUPER DUPER LOW BALL bid.

You SHOULD have paid $4200 ($3/sf) for this job. Instead you paid 20% of the real cost of doing this job.

I'm very sorry but you need to spend the $5-$6/sf cost of a full sand and refinish = $7,000 or so.