Don't call back this number. It is a way for scammers and telemarketers to collect "live" phone numbers. Once you call them back, your number will be registered as a "live" number and will be sold to other scammers and telemarketers and you'll start getting many more unwanted calls.
No response hung up call it and number is not in service bit look it up sure enough scam caller can't stand scam callers enough is enough they all need to be stopped once and for all