User Preferences don't change when trying to change them

[kevinthedang]

Describe the bug
When a user attempts to change a preference, it does not change.
Server preferences are working as intended.

To Reproduce
Steps to reproduce the behavior:

1. Startup the discord bot service
2. Type '/message-style true'
3. Check the user preference file of discord user: data/<discordUsername>-config.json
4. You will see that there are no changes to your file (unless your config never existed. If so, start from step 1 again)

Expected behavior
When changing a user preferences in data/<discordUsername>-config.json, it should change the preferences desired.
Example: changing "message-style": false to "message-style": true

Screenshots

Additional context
This bug occurred after implementing #80

[kevinthedang]

Problem identified,

We are storing as an incorrect user. Likely an issue with running commands and declaring what username to use.

@JT2M0L3Y