i believe still the best way is resolve all your problems with Nasim and its authorised service centers.
Take my case for example, I have reported a problem with my almost 2 year old 408 NA . The car was hard to start especially after leaving the car idle overnight or after long hours e.g. after a days work ------I have to twist and turn the ignition key sometimes two times, before it would fire up. At times though seldom I even have to do it on third attempts), it first appeared on and off but then it had worsen to almost daily, initially i have highlighted this to Chan Sow Lin Branch but they could not fix it and mentioned they have reported this in the system and advised me to approach Glenmarie HQ for warranty claim.
I wrote to Clic and call them but they were all booked up, so i asked if GeoAuto can help and without appointment, i went there in a morning and have the problem diagnosed and it was found a speed sensor faulty issue is the culprit, so geoAuto helped me put in the warranty claim, at that time, it was near Raya holidays, so i was told to expect the parts to come in 2 weeks. Well two weeks eventually becomes almost 2 months later after regular call up and email to clic, the parts was changed FOC EVENTUALLY but i had to leave my car overnight there. and while at it, i also ask them to check the air cond. smell issue AFTER even replacing the filter at 40k km service recently of which they claim they have cleaned it 'More' thoroughly... which resulted into Smell gone,,,,well for now...
It was frustrating re: the wait . Sure! it was very time consuming in chasing them , Sure that too! it caused anxiety and nervousness, sure you bet!
The experience was even worsened with untidy work shown (certain car internal plastic covers was removed obviously but somehow the service technician has even overlooked to put them back), Can you imagine? it was even heartbreaking when your colleagues and wife tell you in your face, "SEE? French cars, told you so"
It was lucky for me that i have a second car and a driver (wife's car and she volunteered to chauffeur me through the ordeal, and we took a day off on top of me taking additional time off when i drove my car to Geoauto before leaving it there)
But if i sit back and ask myself: Were Clic@naza's team and the service advisors at GeoAuto patient, courteous and apologetic, yes, they were, these individuals i am sure are dealing with many cases (just look at the car lining up at service centres) and met with angry faces and raised voices, you bet and even as much as i would hate to admit it, they are possibly doing their best to help us and so far to me they have not yet fail in my score cards, but i can imagine when a parts did not turn up, or delay somewhere, somehow, it is actually beyond their control.
I learnt that being brutally honest with them helps, they are just like you and me, normal person who deserve some fundamental level of respect. I even tell them look guys, we are in this forum of car owners who don't just ONLY criticize but PRAISE the cars and service too when it is due. We also get sneered by people (even our close ones) who now give us these. ''See, I have told you so'' kind of snap backs, and it would not help their (Peugeot's) sales, brand and reputation
We praise when we get good service too...but bear in mind not all encounters are sweet (especially when you come with a 'problem'). My advice to all who are facing problems, small and big with your car now, you got to do your part in chasing them, call & email clic, call the service advisor even when they don't call you back (as PROMISED), it is your car, who is going to take care of your baby if not you taking the lead?
I am not sure everyone would agree, this is just my perspective

That "told you so" part is the worst. So humiliating.