how would I get in touch with the manager?

Call them

If you are trying to get a hold of the general manager, I would suggest going in to speak with them. Never know if you're on the phone with the right person.

Call them ask for whatever manager over department you have a problem with

Call the store and ask for the manager or go by lay-way if your in the store and ask for them.

Call the store and ask to speak to the manager.