Worst experience ever, took my car today to get my...

Worst experience ever, took my car today to get my battery replaced, my appointment was at 7 am, so they told me my car should be ready by 1pm. when i when back to pick up my car it wasnt ready. In fact a lady (Barbara) told me they havent even started working n my car, but yet nobady called me to let me know my car wasnt ready. Worst service.!