Claim Payment Vs Letter of demand

I was so happy when I checked my email this afternoon. Alhamdullillah I got both claim payments which are aproximately RM1k in total. Yela di kala baki akaun tinggal ratus/puluh. Maka kita perlu korek segala sumber yg ada

However, my excitement turned sour when I checked my mailbox later in the evening. I received letter of demand for outstanding payment from the lawyer 😭😭😭😭. This is due to the developer and previous owner fault as well as my incompetence lawyer. As a result, I have to be responsible for other people debt 😠😠😠.