I could use some advice......I have a 2016 MX 90D that I purchased new. At the time, I also purchased the prepaid service plan to provide 4 years of recommended factory service. I have now taken my car for service 3 years in a row and had the prepaid service done without issue. Today, as I approach my 4th year of ownership with 66,000 miles, I schedule my forth and final prepaid service. ALERT ALERT.....I get a text message from the service center that this 4 year service will cost me $798.07 because my prepaid plan had expired. (My best guess is because im over 50K miles). That was the extent of the conversation. I responded to their text, but days have passed and Ive heard nothing back. Now Im not trying to get them to extend my warranty, or fix anything that's now out of warranty. I just want them to perform the service which I paid for 4 years ago. This is out of pocked cash I handed them, and Im not trying to get anything I havent paid for, just my annual service. As I search the forums for answers, one thing that did catch my eye - it was a letter to a Tesla owner from Tesla's Jerome Guillen, VP, World Wide Sales and Service. Its a quote from the blog, so I have no date, but it basically reads: "Dear Mr.... Any customer who has paid for a 4-year service plan is entitled to 4 "annual service" visits. The customer can elect to bring the car whenever they desire: we recommend every year or every 12,500miles (whichever comes first), but the customer are free to do whatever they essentially desire. They can bring the car every 18 months or every 6 months. In the end, they will receive the 4 "annual service" they have paid for. I hope this clarifies the situation. Many thanks for your continued support. Best Wishes, Jerome Guillen | VP, WW Sales and Service" Can anyone provide further information on this subject....I want to get my service done, but dont want to be paying for something thats prepaid.