I am not sure that I would be buying on line if I were you.  You seem to have so much bad luck.  Maybe check seller feedback better prior to purchase.  

@ hel_882484

Just a tip, but  in light of the  numerous refunds you've received as shown in your feedback left for others, if you've filed claims for them all under eBay's MBG,  you may find your buying account  restricted or even suspended by eBay in the near future.

It's classed as 'Abusing eBay's buyer protection program' - excessive disputes

You certainly have terrible luck with items not arriving

Almost all your feedback comments on the first page say items did not arrive

And you should be aware of the correct process for getting a refund by now

Not all sellers refund without a dispute being opened 

Other members cannot see anything from the order number

What was the item number?

When was it due?

Did the seller provide tracking?

Are you checking feedback before you buy?

Look at their feedback, which is lousy, they have a history of doing this and are registered in China - say no more.

If the item hasn't arrived by the latest estimated delivery date, you need to follow correct procedure by opening a request for item not received, and you need to follow it through. If the eligibility requirements have been met, you will be covered by the MBG.

As long are not out of pocket, it really doesn't make any difference to you if the seller provides the refund or not - that's an issue for eBay to address.