Why didn't I get paid correctly?

Ok payday is FRIDAY and TODAY is pay day. I worrk at a retail store. I started training June 22 and June 23 (wednesday and thursday) and they only paid me for those hours. I did 22 hours starting friday (24th) up to yesterday (30th) and they didn't pay for those!! We get paid bi-weekly so why wasn't I paid for that week?