Darkening After Laser Hair Removal- Burn or Hyperpigmentation?

The machine they used was LHE Mistral?...While during the treatment the technician gave me an ice pack but continued with thye hair removal rather than stopping.  Not even 1/2 hr after leaving the business my lower legs felt as if they were on fire. I iced them down for 3 hrs. The next morning I went to see the technician and she said its hyperpigmentation and its to be expected, I did ask if its supposed to hurt?. I've gone to my dr who has prescribed antibacterial crem and states these are burns. I still have some discomfort when standing too long or showering. The dr gave me Taro-Mupirocin and I've also been recently seen by a dermatologist whose clinic also does Laser hair removal and she confimred that there is hyperpigmentation and extreme burns which she has prescribed Betaderm Betametasonewhich she indicated will stop the pigment process.  The dr also indicated that there are areas that are still inflammed and this is 6 days after the Laser process. The dermatologist also said a Sinnott would've have been the better machine to use. The laser technician refuses to give me her insurace information.