Let me tell you something......
Tell that clinic to shove it with the threats. I would welcome them to try and sue me. They will NEVER win a suit against you.
Absolutely unbelievable that here in the day and age they did this. I KNOW what I am talking about because I had these types of grafts in the early 90s too. This is the old antiquated "black and decker" style punch grafts luckily mine doesn't back because had enough donor hair to get it done right when the FUE techniques came long. And luckily my hair on the sides and the back is still very thick because the scars left on the back and sides of my head (that you can only, luckily see, when my head was shaved for my FUE procedures) are horrendous.
No way a clinic should still be performing this type of procedure here in 2017! FUE has been around WAY long enough now.
I just saw your picture again of your results from your repair work, and once again , It's a major improvement.
In the event you don't like the final results, however, you could still consider "Scalp SMP." You can also use the same if you just wanted to camouflage your scars in the donor area.
Don't worry about them sueing you because they will NEVER win. To the contrary I'd be suing them for gross negligence and incompetence performing HT procedures that are antiquated.