Instruction: Analyze the user's review text and determine the overall sentiment expressed, then choose the corresponding sentiment option from the provided list (A: very positive, B: positive, C: neutral, D: negative, E: very negative) based on the identified sentiment.

Input:
After plugging this in to the nuvi & the wall, my nuvi cycled on & turned off over and over and over and over...well, you get the picture. Although irritating, I let it do this for about half an hour. When I finally unplugged it, I found that not only didn't it charge, but it used the battery life the nuvi had. The only reason I didn't return it is because it was only a couple dollars. It would take too much time & effort to bother. Update, upon reading this review, the company sent me a refund without my asking them to. So, I have changed my stars to 3 to reflect the surprising & nice customer service. It may be that I just got a glitchy charger after all.

Options:
A: very positive
B: positive
C: neutral
D: negative
E: very negative
Answer: C: neutral