People sometimes say:
Sorry for any inconvenience this caused.
Is it possible to say:
Sorry for any disturb this caused.
when I ask for a stranger for help by email?
Updated with more context:
I wanted to ask him do me a favor, but he hasn't replied for many days. I just need his help and since it's all about business, I decided to increase my bid (pay him more money) to negotiate again. And this is the email I am writing to do so.