Caller: Amazon prime video

Said we had signed up to Amazon Prime Video and did we want to continue our sub or cancel. We had never signed up and they were wanting credit card details. We asked for their number to ring them back and check if they were real or a scam but devised that we couldn’t ring back, so we said they were a scam and hung up. We rang the number back and a recorded message from Optus saying that the number had been disconnected