One elderly customer got up on the wrong side of the bed the day they went to pay a retail employee a visit to complain. The grandma was livid that her phone wasn't working anymore, and it was only 3 months old, so she wanted a refund, thank you very much. The employee informed her that there were no refunds after 3 months, but the grandma didn't accept that as an answer. So, after making a scene, the employee took a look at the phone. They quickly discovered that it was just full — the grandma…