There are more threads on this issue on this Forum than I have had hot dinners recently. Just do a search
It is along standing and horrible scam. And accidentally you have fallen prey to it. Because you engaged with it you will be bombarded with further calls as they try and try again because they know you responded with a conversation.
The caller number was spoofed so isn't real or belong to a real customer and has been purloined for this illicit use.
Moral of story - don't engage with numbers you don't recognise and disconnect as soon as you think it is dodgy.
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