May I help you?

I worked today at a store that I go to help out when they need help. I only thought I would be helping, not doing everything! I answered phones, scheduled appointments, helped people pick out glasses, called insurance companies, cleaned and adjusted glasses and did repairs all by myself with little to no help from the other girl that was there. So what if she's the dr's tech? I was calling some of the many orders that were piling up to be called, and a customer came in and instead of her going to help the lady she called me out of the back where I was calling customers, to help the lady!! That was really where I got pissed! I mean come on..even if you thought that I was helping the lady the nice thing to do would be to say "is someone helping you?" I can't stand lazy people. I answered the phone at least 10 times in the middle of me helping my customers with ordering there glasses which is rude if you ask me. I don't mind going to other stores to help out but, I don't want to do it all. On top of that, I am not feeling very good and losing my voice!