how do you convince someone that your sorry.
Well are you trying to 'convince' them that your sorry or are you genuinely sorry?.. If you are actually sorry apologise for what you did. Easy as that prove it to them.
well I would just say "im srry" if that wont work well at least you tried to tell them how you felt about the deal... so ...
Be sorry. It will come out in your actions. You cannot make someone forgive you, so just hold up your end of the deal.
if your really sorry it will show you dunt hve to convince.
by amending your mistake and turning a good way
You prove it to them over time.