VW Polo 2012

This is what happened:
1) Changed OEM interior bulbs to LEDs (5 front 2 back 1 boot)
2) LEDs flicking with a little bit of light when switch is 'off' for middle front and back lights
3) Daytime lights and rear lights stopped working
4) Changed back to OEM interior bulbs
5) No interior bulbs work anymore
6) Checked all fuses (on top of battery and under steering wheel), replaced one blown fuse (daytime lights and rear lights working again)
7) Interior lights still not working
If I put back LED lights, it works, except still has flicking issue.

Any ideas on how I can get the original bulbs working again?