On the 22nd January i order pop up 2x3 meters tents for Camping or Beach activities and paid total amount promised delivery on the 28th January

On the 22nd January i order pop up 2x3 meters tents for Camping or Beach activities and paid total amount promised delivery on the 28th January. On 27th they canceled the order because they don't have stock on hand no explanation just sorry what should I do now they destroy my credibility to my client now.