Rcs PnP Store card bad

Rcs has the worst service when it comes to closing accounts. I settled my account and requested a letter stating that my account has been settled and closed. They told me that thet can only send me a letter stating that it has been settled and will be closed and it will take 24 to 48 hours to receive. Then the account can only be closed after 36 days. It's passed 48 business hours and I'm still waiting for the letter. Every time when you phone them you have to be on the line for about 45 minutes without getting help. They don't even care about the urgency of the letter. Not even a supervisor can help. It's the worst place to open an account with