From my personal experience, no one from maxis is gonna collect the equipment. So feel free to do your own thing instead of waiting for them to call you. Just hold on to the item for at least 6 months then you can sell it or throw it away. I threw away mine. It's been 2 years since I terminated maxis fibre and no one contacted me and I did not get charged at all. I even resubscribed to maxis fibre without any penalty.