Writing A Goodwill Letter To Thank Verizon Account Number On Goodwill Credit Letter?

Verizon Account Number on Goodwill Credit Letter? - writing a goodwill letter to thank

I wanted to write a good letter to Verizon, they have a negative impact on my credit report. Paid a few years ago. I wanted to write and ask them if they wanted to withdraw, but you do not know the account number is low. I am part of a credit report, printed. I wondered if I could send a partial account number, or is there another way to know this? "I'm not even sure whether you really need the account number, but I thought in the letter as a reference.

Thanks in advance!