You have a short time after posting to edit your posts, to save having to reply multiple times - choose "post options" in the top-right and "edit post"
To make any changes to your package, you'll need to call in - 150 from a VM phone or 0345 4541111 from any other phone.
You either have 14days cooling-off from your original package change to revert to Mix and renegotiate again, or just add the personal pick. I strongly recommend familiarising yourself with the channel guide linked above, that way when you call in you are informed as to what bundle you might need - instead of taking the agent's word for it.
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