Shoe squeaking is one of the best examples of the limitations of the clothing fora, because communicating what you mean is virtually impossible.
Broadly speaking, there is a sort of squeaking that comes from new shoes that have been highly polished and this is normal. I find the sound attractive even.
There is a more ominous squeaking that comes from the interior of the shoe: that it is the shank is pure speculation but from experience I can tell you that there appear to be very few people willing to repair the problem, and I would definitely return the shoes if you can. I find hard to believe that the problem is associated with cheap shoes, since I imagine that it only occurs in welted shoes, which are more expensive than glued. For example, neither sneakers nor espadrilles appear to be able to squeak.