If you are forgetful about your pets..
Perhaps you should take a step back from getting another one.
Take a look at your life priorities, and how you schedule your time.
Also that is a rather large waste of money. And very irresponsible of you.
You need to think about if it were a child or larger pet. You would have been prosecuted for cruelty if it were.
Perhaps you should try for a local pet store and a G. rosea.
WOW.. I just don't know what to say.. to you... Forgetting things like that can lead to a type of behavior that can really cause you some major problems.
And apparently you don't think about things you do nor do you really care about anything but yourself.