Order 50mm and receive 10mm sheets

I placed an order for 50mm sheets with Chantelle to be collected in PE. When order was placed the company tried squeezing an extra Rush levy out Then delivery charge at R2000 as we are at a remote address Delivery was arranged in town at a reasonable rate and we were to collect Upon collection 10mm sheets was delivered versus my order I agree it could have been an honest mistake or a deliberate substituition

I am insisting that my original order be adhered to - extra 10mm sheets or replacement of the 50mm ordered initially Because the error was not on my side I do expect delivery of the correct order at company or branch expense at my home address I am not incurring extra travel expenses due to company negligence