There are other resources where you can find outlet, look up internations.org for a local branch near you. Also just do some reading about the process and things to think about as a new emigrant.
This process is not going to be fun then, taking the K1 route, since you won’t be able to work for months when you come over here, and you have to apply for three more things when you get here.
Just have your husband use his card a few times so both cards show up on the statement. This is a very easy fix. Absolutely do not call that banker or go in, you do not need a letter from the bank. In fact I would report this person to the bank.