Other members have not charged you anything and nobody here is going to give you money

and eBay not going to response since they do not read the member to member forum

How do you mean you have sent messages?

To whom?

If you mean emailed eBay, pointless since it is an bot set up not read by humans

Why did you not cancel the unused label ?

If you did not cancel the label, yes, you will obviously be charged for it since eBay consider it 'used' if you don't