Waited 45 minutes for my turn because they only ha...

Waited 45 minutes for my turn because they only had one person helping at a "check out" and one person roaming to sell products and tell people to sign in. Apparently service is so slow you have the option of making a reservation. I had no way of knowing this was even an option. When it's my turn they call out a different 'M' name. I ask if she meant me and I was told no. Then three people who signed in after me where helped before I had to intervene to get a turn. What I needed took 2min to complete now an hour after arriving. Never again!