CRM is nearly inexistant in the UAE and call-centers aggressive during the week-end, you'll figure it out very soon, unless you're into private banking ( which is just another way to pay for a unique account manager ).
You will be surprised, but after tries with citibank, hsbc, nbd-emirates bank & dubai bank, I'm quite happy with dubai islamic bank!
Ok, don't expect them to be excellent, fast and hard working, but at least i didn't notice any hidden/extra fee or unexpected little surprise!
You could even manage to get your paperwork ( clearance, etc ) done extremly fast if you push them a bit!
Cleared a car loan in advance and got ALL interests refund transfered the same morning, was amazed !