Had the rear offside trailing wheel arch rust bubbles removed in August 2015 by a so called word of mouth panel expert (who does police cars). What was forecast as a week long repair turned out to be 3 weeks. He made excuses but it was obvious he was busy. I now find the rust has returned with a vengeance and this is after the car being garaged during the winter in October 2015 and back on the road in April 2016. I am seriously unimpressed. Found the invoice but no mention of any warranty period. Before I tackle them - do I have any grounds for complaining other than them not doing a thorough job in the first place? Failing them having a guilt trip and offering to repair it again (do I really want to go back to them?), can anyone recommend a good panel repair expert within reasonable distance of Chester and the wirral please?