It's best you wait a good month or two otherwise you are wasting your time calling.

I know that I must call ebay to get a limit increase but when should I call them? I sold my first item 11 days ago and since that I sold 3 more items so 4 in total. Or will they automatically increase the item limit after a while? Should I wait to call them until I have got a few feedbacks because I haven't got any yet?? Thanks