Hi @********026 ,
Good day!
As per blocking the buyer, Seller can only request for this if the buyer speaking rude or using profanities towards the Seller.
As per the cancellation naman po, you can only request to cancel if ssi buyer po mismo ang nag request. Reason that the Buyer is not responsive because you are trying to contact them due to out of stock reason is invalid.
Moving forward, let's make sure po na kung ilan ang onhand natin per SKU, yun lang din po ang i-declare natin para hindi maapektuhan ang fulfillment ng shop.
Hope this clarifies your question po.