I asked a few questions and sent a few emails to a customer service and I want to begin with a kind of apologizing to my last email I will send.
I do not think it should be too formal or too apologetic but as showing a politeness, I would like to add it.
However, using the word disturbing sounds a bit too strong for me since I have not said any rude thing on my emails and I am their customer.
What should I say then?
I am sorry to disturb you but I need to add some information to the last email I sent.
I am sorry to make you busy but I need to add...