United Community - Carrollton Laura Lamb: United Community Bank is the best bank in Carrollton! I have used them for many years, now, and the customer service and friendliness of the staff is the absolute best, hands down! Ive used other banks, and I usually have just been frustrated with the attitude and unfriendliness of the tellers, and the time spent in line or at the drive-through. I actually enjoy going to UCB!