Well, rage is never good, and I know it too. And so, I was REALLY guilt ridden as soon as it happened. I mean, I didn't mean to kick a hole into my door but I still vented it out in the first place... Plus it's not even my own home (...shit!!!!). Anyway, here's a step-by-step DIY to fix a hole in a hollow doors that I learned while frantically trying to amend the mess I made.
Here's what I found from wikihow "How to Repair a Damage Hollow Core Door". So, I bought these tools from Asda and ebay to fix the door:
1. A spackle knife
2. "Fix and Fill" Expandable foam
3. "Polyfilla" Woodflex cement
4. A utility knife
5. Sand paper
6. Some tissue or wipes
7. Matching off-white paint
8. A paint brush
9. A small saw (optional)
1. First step required cleaning the hole. I removed the chipped parts, splinters and any loose ply pieces. I also used the utility knife to cut away the parts to have a clean hole. This is necessary to have a smooth finish. Then I wiped it clean with wet wipes.
3. Once dry, I cut out the excess foam the next day and sanded any extra foam around the hole area. I also cut out some foam from the hole to make it at least a millimeter or 2 deep for the cement to fill. You can do that in steps with appropriate tools. I used a big bread knife (due to lack of any other tools) to cut the foam first, and then the utility knife to make the job cleaner.