Actually you don't need to walk-in, just call careline (wait until it's picked up) or pick any of the Sales Executives here: https://www.ptptn.gov.my/seksyen-careline-side

Then tell the officer you are interested to do full settlement, he/she will be glad to assist you (I think they have commission). Then, you will be given with their mobile no. for further conversation in WhatsApp and will send you everything via WhatsApp. You just follow the steps that are advised and after your full settlement, this officer will send you the full settlement letter. If you walk-in, the officer who attends to you will also give you mobile no.

I'm not a bro but glad to have helped you.

Side note, my EPF payment already reflected yesterday. It's time for me to settle the remainder.