Generator Scam Alert

Bought and paid for a generator online, price included delivery. Was then contacted by a 3rd party to pay an R18 000 "deposit" before the delivery could take place. Refused to pay and contacted sales person who said he would resolve the issue. Generator has not been delivered, messages have been blocked and work phone is not answered. We have mailed to cancel the order and refund the payment but have not received a response-or the refund. This looks like it could be a scam.