Has anyone called a jump start service in Dubai at night, and how did it go?

My Nissan Patrol went completely dead in a mall parking lot last Thursday, around ten at night, and I had no idea who to call. No cables, no friend nearby, and my phone battery was low too, so I felt properly stuck. Is it normal for a battery to die with no warning like that, or are there signs I missed? Looking back, the engine was slow to start for about a week, but I ignored it. After I got home I searched online and found the Jumpstart Service Dubai Team mentioned on, and now I am curious whether people here have actually used a service like that. How long did they take to reach you, and did they come to the exact spot or did you have to explain the location many times? Do they only jump start the car, or can they also test the battery and tell you if it needs replacing? I also wonder about the price, is it a fixed amount or does it change at night and on weekends? Can you pay by card at the car, or is cash safer? Another thing, if the jump start works, how long should you drive before switching the engine off again, because I heard short trips can leave you stranded a second time. Should I ask them to check the alternator too? I would like to save a number in my phone now so I am not panicking next time. If you have a story, a mistake to avoid, or one question you wish you had asked before calling, please share it.