Walmart complaint: lines

I went to Walmart in Wesley Chapel at approximately 10:30AM. I went to check out my groceries and there was only one cashier with 15 people on line. I am a senior and do not believe in using the automated machine to check out. I am disabled and cannot pack my own packages. The other people on line started complaining too. An employee came over who claimed to be the manager (he was not) and told everyone to be quiet. One particular customer had to go to work and so she went to the customer service desk and spoke to the real manager. Only then did they open up 2 more registers. When a manger sees a long line, they should not have to be told to open up a register. It’s his or her job to see to it that the lines move smoothly. This automation policy is ridiculous. I tried it once and was not given the right change. I brought it to the attention of the Walmart employee who told me that the machine ran out of change and that I should go to the customer service desk. Again, wait on line again? At this point I don”t think that I will return to Walmart unless they improve their customer service.