I studied below and I lost my 500 hours that the g...

I studied below and I lost my 500 hours that the government gave me, when I was sick and when I had surgery and I wanted to give the medical certificate to the teacher she said no it's ok while I lost my hours without a certificate. I regret so much to have gone to this school teachers that I had they taught as if they do not like what they do ... I did not learn anything