Just to reaffirm, Wells Fargo provided you with a letter for proof of funds mentioning running balance for 6 months, no debts etc ??I don't know why Wells Fargo didn't give you such letter. I walked into my Wells Fargo branch here in Pennsylvania and they were more than happy to provide such letter and they had the format already.
Even if you are trying to submit your statements, you will have to get it verified with bank because online statements are not sufficient for POF.
I would suggest you to walk into your branch and talk to your banker, they will definitely be able to help you to get that letter.
They are clearly telling me they provide no such letter ?? !