Product not received

Hello My name is Yuri, i´m purchasing coordinator at Globe Química, an API manufacturer from Brazil. We were working on a project, which will use an item that we had found at company named Lapton Health. Their information is: Lapton Health Limited Lapton Building 11, Akinlabayo Adeola Street. Victoria Island, Ikeja, Lagos state NG Phone: 234 8133823091 In Nov, 1st, 2024, we sent the Purchase Order appoved, in the Total of USD 640,00 In nov, 5th they sent us the Proforma Invoice and requested the payment in advance. We paid on Nov 7th. In Dec 3rd, Lapton informed us that "a Nigeria Export council promotion permission and clearance to ship this to you. At the moment we are having an issue with the minimum order quality to be ship out to you which is 200g instead of 100g" They´ve sent us a letter of Nigeria Export Council stating the same. On the same day we agreed to increase the amount, and so double the payment of 670,00 In Dec 11th, we have sent a revised Purchase Order, and Payed the extra 670 USD in the next day Since then we have been trying to receive the item, that has not been shipped or receive the money back All the company says is handling the issue, but nothing happens. So, I kindly request your help in solving this issue Best Regards