
You should also contact the place you saw the puppy advertised and tell them what has happened to you. did you keep a copy of the advert?
When replying to any advert for a puppy always keep a copy of the advert. If it is a local newspaper for example cut out the advert and the date it appeared. You will find many papers do not like people like this advertising in their papers. If it was an online web site like www.Epupz complain to them as well.
Take the advert details and tell your story to the trading standards, and they may be able to deal with this on your behalf.
This is one reason every one on Champdogs will advise people searching for a puppy to go to the Kennel Club and to the breed club or society. It is the safest way to find a well bred pedigree puppy from a responsible breeder.
Nobody here would advise you to purchase a puppy from the DLR either.