I need to get in touch with Executive Customer Relations

I disconnected my service back in October of 2025 and upon returning my equipment to the Xfinity store was lead to believe that the account was set.  I come to discover that a final bill was sent to an old address, a prior address which I havent lived at in over a year, with a balance due of $138.  I received what I thought were spam calls from Eastern Account Systems as no voicemails were left only to discover they were trying to collect on it when my credit score dropped 90+ points.  I am now trying to buy a house and even though I paid this off in February my credit score isnt increasing.  I am told I should contact Executive Customer Relations who might be able to help.

Thanks in advance

S