NCH Software Pty Ltd NCH Express Burn. NCH Swift Sound Spammed my emails sent using Adobe which I use & will not open unless I install & purchase there product. Canberra ACT, Australia

I used a trail version of there program back in the days when I burnt data on discs.I uninstalled the program because it was very poor but I kept getting pop ups and just recently they spammed my emails and the only way to open them is to install there program which I did once then uninstalled it which almost crashed my computer. I have attempted to contact them but there phone is disconnected and another number is always engaged. I have lost the benefit of email excess and cannot open pdf files.