Xfinity entered my address wrong (twice)

Went to the Xfinity store to get my gear for my cable and internet, and when they made my account they put in the wrong address, so I couldn’t access my account to set up anything. Phone support was no use of course, so I had to go out of my way to go to the store, where I asked them to verify the address (at this point I hadn’t confirmed they used the wrong address but I suspected it). They said they used the right address even after I showed it to them written down, they ensured that was the address on file and they had no clue what was going on and couldn’t help. I had to get support on Reddit where they confirmed they indeed had used the wrong address when making my account and services. How did I fix this without having to go to the store again?