Awkward moment of the day

So I did something today that many of you have done before and will probably do in the future. I called a friend (I was returning a phone call.) She had asked me for some help about a pattern. I do a quick hello and ask her the status on the pattern. She had no idea what I was talking about. I swore to her that we had this conservation last week. She couldn't remember it. I was perplexed, then realized after a minute of my thinking I was crazy or she was, that I had called the wrong person. I have two friends with the same name and spelled differently (Erika and Erica). I had called the wrong one. Result-their full names(first and last) are saved into my phone.