The damage has been done, but good to see steps to remedy the situation. Teams is awful and if they had to compete with a fair price they would lose. Maybe they're trying to stop more damages by doing this worldwide.
"Excel doesn’t offer the option to turn off this auto-formatting, and the only way to avoid it is to change the data type for individual columns. Even then, a scientist might fix their own data, but as soon as someone else opens the same spreadsheet in Excel without thinking, errors will be introduced all over again."