I think the answer to your question has to be a definite no. Only return the dog if you've realized (a little too late) that you aren't cut out to be a dog owner. Having a pet isn't a light responsibility. They need and deserve food, water, shelter, exercise, medical care, love and attention, and if you aren't willing or able to provide any of the above, then bring the dog back, but don't exchange it like a birthday gift that wasn't quite right. The whining and crying seems like it's probably related to having to go to the bathroom, because based on your comments, this behavior ceases once you walk your dog. Just imagine going to work and not being able to use the restroom the entire time until you got home, you might complain too. If your dog is urinating frequently, a vet visit is in order, but you should take any new pet to get a check up anyhow. And remember, animals who are rescued from shelters often feel abandoned and they may have come from abusive homes, and it's going to take some time to get used to a new owner and a new home and a new daily schedule. Give your dog a chance to get comfortable and settled because you're going to go through many dogs if the requirement for staying is to never whine or cry. So, definitely go to the vet, perhaps you should meet with a dog trainer/take a training class, and see if there are any dog walkers in your area. A mid-day run might alleviate that crying. Not only would the dog benefit from a little exercise, he/she will also get a chance to go to the bathroom, and have a little social interaction to stave off loneliness. Good luck. Remember, having a dog isn't easy, but you should be glad to do the work and if you're not, maybe having a pet isn't for you.
