What’s the worst company you’ve ever dealt with? Ask our consumer champion anything

Each week Anna Tims helps Guardian readers deal with consumer issues that can range from mildly annoying to utterly life-wrecking.

Anna will be joining us online at 3pm BST. Ask her anything about what she’s learned over the past few years, from the best and worst companies she’s dealt with, to the most unlikely and difficult issues she’s helped Guardian readers face.

Sign in or sign up to post your question. In the meantime here are some of her recent columns.