Packlink have a bad name everywhere. Trustpilot, here, it doesn't take long to do your research. They aren't good in many areas including claims and claiming parcels are oversized when they aren't, and then after appealing, still taking the money from you.
One thing that hasn't popped up much is them cancelling refunds for cancelled labels. Considering it's all automated, it's hard to believe a label is detected as used if it isn't. It could well be a mistake (you'd know if you copied and pasted the parcel into the Evri tracking on their website, if no scans, you have grounds to contact them and ask them to look into it) or you've used that first label by mistake.
