Who called from 6024927992

Repeated calls at work number from 'Merchant Services' for the business owner.  They act like they have to talk to the owner about a change in their account (even though we do not do business with them).  He told me we do not have an account and this is a scam.  When another person called from 'Merchant Services' I let them know that we are not interested in their services and asked to be taken off their list.  The guy became really angry and told me they will just keep calling before he hung up.

Not sure who these people are but they have called 3 times in the last thirty minutes. Rings twice then hangs up.

They are a scam 100%. I unfortunately used to work for a similar type company years back. Don't give them any information.