Hi
There is no need to call bank, You can simply ask sales department for a refund if You are not satisfied.
But I think most of Your problems are caused by JCH. Not all scripts can be combined together because some scripts or styles needs to be loaded in a specific time or order and when placed in one file loses this ability.
Please tell me the exact urls to Your problems. Right now I have visited every page already and login is always fine. Screenshot attached. I know about a bug there because JS team used a css selector "clear" to strip elements from padding, margin, height, etc and we are using same css class to clear floats. I just need to see it broken to tell the fix for it.