Been fed some bulls**t mate. Also you don't need to pay someone to do that, possibly the easiest job you can do on a clio, providing you have axle stands. Which if you don't it will still probably be cheaper to buy a set than what a garage will charage you to do it.
put rear up on axle stands via jack points, put your jack on rear beam to take the weight, remove the 2 bolts holding shocks in then lower the rear beam with jack till springs fall out, remove adjusters, pop springs back in, rebolt the shocks. Jobs a good un.