The world's most iconic TV shopping network which revolutionised the genre in the 1990s could be heading for financial turmoil. According to Bloomberg, QVC has been in talks to voluntarily restructure its debt, which could include filing Chapter 11 bankruptcy. It's understood the network has been struggling with debts, weak sales and tariffs, although no final decision has been made and it's reported discussions with creditors are ongoing. Express.co.uk have contacted QVC for comment. Article continues below ADVERTISEMENT On Tuesday last week, the QVC stock fell 66% to $3.74, the steep one-day drop on record. However, at the time of…