Alternator dying on my Pajero – need a solid garage near Al Barsha

Alternator dying on my Pajero – need a solid garage near Al Barsha South

So I've been dealing with this annoying electrical issue on my Mitsubishi Pajero for the past couple of weeks and I think I've finally narrowed it down to the alternator. Started with the battery light flickering on and off randomly, then my headlights began dimming when I'm sitting at traffic lights, and yesterday the AC started cutting out intermittently which is just not acceptable in this weather. I had the battery checked at a petrol station and they said it's holding charge fine so that pretty much leaves the alternator as the culprit. I live in Al Barsha South and I'm really hoping to find a workshop nearby that actually knows what they're doing with these electrical components because I've heard horror stories about places that just replace parts without properly diagnosing the issue. A colleague at work mentioned there's expert alternator and dynamo repair near Al Barsha South that handles Japanese 4x4s specifically but I can't remember the name of the place. Does anyone have recommendations for a trustworthy garage in this area that won't try to sell me a brand new alternator if a simple repair or regulator replacement would fix the problem? I'm also curious about turnaround time because I need the car for work and can't afford to be without it for days. Would really appreciate any advice from people who've been through similar issues with their Pajeros or other SUVs, especially regarding cost and whether it's worth repairing versus just swapping in a reconditioned unit. I'm not super mechanically minded but I can tell when something's off and right now the car just feels sluggish electrically if that makes any sense. Also if anyone knows a place that does free diagnostic checks that would be amazing, I'm tired of paying for tests that just confirm what I already suspect.