Company wanted to charge me after the price was agreed and parcel sent. Claimed that the shipment was audited and surcharges were applied, as the package was found to be larger or heavier than declared, which has increased the price. Requested a photographic evidence, rather than providing evidence themselves. Wanted £64 pounds more, I paid £17 initially for the parcel. I contacted my bank and stoped future payments to them in case they attempt to take money out of my account and said that I will report them to Trading Standards UK. Also emailed them that "Once a price has been agreed between the trader and consumer it is deemed reasonable and legally binding. I am under no legal obligation to pay further charges. Furthermore; if the trader didn’t want to carry out the service at the agreed price then they should have informed me of this prior to performing to the contract. This would have given me the chance to either agree or decline the amended price". They do not have a leg to stand on in court, and they will never make a court claim.