None of the major insurance companies say they have a direct line to the 'customer retentions' department – aka the Holy Grail of haggling. Here are a couple of examples of the best numbers to speak to someone about leaving. The AA's is 0343 316 4444 (option 4, 1, 1 for car and 4, 1, 2 for home), and Direct Line's is 0345 246 3761 (option 1 ...