Your understanding is in fact rather better than your mark suggests as you do seem to have over-answered some questions and under-answered others. For example there was a lot of general analysis of Vodafone but not really a consideration of profit versus cash flow. And in question 2 you failed to mention the accounting rules.
Meanwhile your discussion of corporate governance and agency theory was top notch. So do take care to answer all that's asked and only what's asked - you'll realise this is also good advice for exam questions!
You've got a very good straight-forward style of writing and you lay your work out well. Keep up the good work.
Do get in touch if you have any queries about the TMA. Hope the wedding (music) went well.