It should be our mistake to dispatch wrong colour to you. Now the case is you ordered 500 pcs of Blue colour in last order but we delivered 500 pcs of grey colour to you.
After checking your new enquiry, you order 500 pcs of Grey colour and 100 pcs of Blue colour in this shipment. If we can take this order, we will deliver 600 pcs of Blue colour to you in the new shipment so that the issued will be resolved.
If we cannot take the order this time, we will deliver 500 pcs of Blue colour to you by courier.