I had an employer that uses Santander for pension, within a day of them adding my info into Santanders systems my email that has never gotten spam before in over 10 years (custom domain, only every used for government stuff or employment stuff) got 20-30 spam emails. It keeps getting 10 or so a day since then.
Big banks WILL sell your info.
Look up YouTube videos on fastest max level on RS3. You can get all your levels to max level with micro transaction loot boxes in a very very short time for a very very large amount of money.