Today I received back my application pack but I was refused

Reason was that I didn't work continuously 12 months under WRS. I had 4 employment under WRS which i showed and proved in my pack but case worker probably didn't see one of them and he "said" that I have 8 months gap between jobs + one job I started 14.1 and finished 07.02 so I don't think i had to apply for WRS at the moment.
Question is if I should appeal or just wait 3 months and apply again (because that will be another 5 years from starting living and working in UK) and maybe not showing that I was visiting and working in UK between 14.1 and 7.2 because in that time I was as well studying in my country.