Sadly, this is the main reason why I cannot recommend trainers who take your dog and train it without you being there. It may seem like an easy way out, but you are now paying the price for that easy way.
Unfortunately, if you aren't there to watch, that trainer can use any method they chose to "train" your dog. Common things are shock collars, prong collars, paddles, and other horrible things no dog should be subjected to in the name of training.
At this point your only choice is to contact a CERTIFIED veterinary behaviorist. Unfortunately, anyone can call themselves a trainer with no testing or even any education in training, but a certified behaviorist will have "diploma" in place outlining the training and testing they have gone thru and will be happy to show their qualifications to you.
You can get their contact information from your local veterinarian.
They will come to your house, observe the dog, and then work on a program to help both you and the dog.
Good luck!

Toto, CD, RN, CGC answered on 2/23/13. Helpful? / 0