Seems your situation is quite tough now.
First of all, whats your family income? and what's your installemnt amount, 70% of your income? or more?
Paying minium on your credit card as well? Honestly I do have similar case like you , but I always think positive, remember one thing, tomorrow is another day.......now what you have to do is sum up all your debts per month (installemnt + credit card min pay), see whether your family income can cover all or not first. If not, you can rent out your apartment, and youself move back to family OR rent a cheaper place to live first.
Second, contact your credit card bank, tell them you are going to stop using the facilities, and arrange with them the monthly payment, (at least you can stop the interest first.)
加按 is the last step, because 加按 need check many record, as you said your 信貸資料庫記錄可能會有影響.
Anyway, think postive all the time, if you still dunno what to do, u can send me email and see what I can do for you from my life and banking experience. my email
[email protected]