Audible 50% off for 3 months (incl current subscribers)

Transcript of my chat with Audible (edited to remove personal data)

Cindy Lou: How can I help you today?
Juless: I note you are giving new customers 3 months membership at 50% off, can you apply this to my account please?
Cindy Lou: Ah yes, we offer that discounted promotion.
Cindy Lou: This is a special promotion in which your membership would only be £3.99 a month for the next three months, which is 50% off the regular price. This plan will give you all the same great benefits and also, a credit every month to exchange for any audiobook you would like from our website, no matter the price of the book. This means you will also be able to return and exchange any audiobook you did not like, no questions asked.
Cindy Lou: Would you like me to proceed now?
Cindy Lou: There you go Juless, you are now enrolled to discounted 1 book monthly plan for £3.99 for the next 3 months.
Juless: thank you for your help
Cindy Lou: You are welcome and also I have added the 2 credits back to her account you should able to see 3 credits now.
Cindy Lou: Your 2nd credit Bill Date: xxxx
Juless: i will still have access to my existing library ?
Cindy Lou: Yes, definitely.

It means they changed my monthly payment to the 11th of the month, but that's no hassle to me.