The only people that will call you will be scammers
The seller is highly unlikely to be reading here and other members do not have any involvement in the transaction
The guess date for delivery would have been shown on the listing before you purchased
You need to contact the seller for any questions you have re when they posted the item, and ask them for the tracking number
Was their handling time within a day or two of payment?
the 10th was Saturday so rather too soon to be concerned yet, especially given the postage delays
