If you use G Mail, Google will keep a record of all the stuff you have ever bought online.
Go to
https://myaccount.google.com/purchases As stated in this week Computer Mag.
You can delete each entry but you must also delete the E Mail.
Likewise if you order Airline tickets and use G Mail, Google will update you Diary on your Android device.
Google also keep this data on other parts of your Google activity...........................................
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