Yep, known scam. I get those fake letters both from people pretending to be Amazon and PayPal. Your first hint is the threat of cutoff,when in yiur head that doesn't sound right. Second hint: look at the email address it came from, by hovering over the address in the header. The real addresses are recognizable, while fake ones will start with pay pal or Amazon but then have obviously fake info such as
amazon@joebrowns.malaysia.eu. No true amazon address looks like that. Both Amazon and PayPal have address to send this spam to. I click forward then add the address I looked up at amazon and PayPal then send. Be sure to clck include in the forward to include all the tracing info they need on the fake. They do go after people and sites. Always, if in doubt, go to your browser and type in the correct address, sign into your account and check. Never never click links in those strange emails.
Velda