marmot

Hi All new here looking for some help, I am not very technical and will try and describe the issues as best i can I have a Dispatch 2011 (9 seater) and it has had on going break issue for nearly two year with no resolve, I am from the UK but now live in France ok so April 2014 my van started making a squealing noise when breaking, i though it was the callipers so took it in to my local garage, when i went to collect it i was told it needed new pads and disc's all round, as soon as i picked it up it started squealing again, so back to the garage, it went back a few times but carried on making the noise, and it increased to squealing after i took my foot off the break peddle, so i took it to my local Citroen garage, their first reaction was the other garage had put cheap pads and disc's on and they needed to bed in, i tried to tell them it was an issue from before but no luck, a few month later i took it back in and they decided to look at it, they claimed to have found a fault with the connector from the foot peddle to the servo, so replaced this, this still didn't fix it. in november 2014 i returned to a wedding in the UK and took my van to a Citroen dealer there, they wanted to start replacing the fan belt??????? so took it to a mates garage, he said the breaks were binding but didn't know why, he replaced the hose from the servo, callipers and had to do disk's and pads as they had warped, this seamed to have worked for a while but the started again november 2015 and is getting worse again, with having no luck going to garages not sure where to turn to. if it is hot day it is worse i am dreading summer time, also not sure if its relevant but a few times the clutch peddle has gone down and stayed down? and the electric window plays up with a mind of its own, i dont think these are related but four garages in i am will to think about any thing. i would greatly appreciate and help or advice