Exchange USD for Pesos in Zihua banks?

I am a permanent resident and I have had an account at Banorte for at least 20 years. Two or three years ago I ended up with a few hundred US dollars in cash. When I tried to exchange them for pesos the documentation was like trying to buy a car on credit.

I have ScotiaBank accounts in Canada. I opened them online. I thought it would make sense to have a ScotiaBank account here to make things easy. When I went to open the account with the help of a friend, we started at about 8:30 a.m., before the bank officially opened, and finished at about 4:00 p.m.

The friend has been on the account. When we tried to simply remove them as signatory on the account we were told we could not do that. We would have to open a new account providing all of the documentation anew, then transfer all of the money from the existing account to the new account, then close the existing account. There goes another day.