Hi there Carol. My name is***** am a computer professional with over 15 years of experience with both Mac and Windows computers, phones, tablets, and printers. It would be my pleasure to assist you with this. I think we should start by running a couple of cleanup utilities on your MAC. I recommend Ccleaner for Mac and MalwareBytes for MAC. Although Macs are much less likely to get viruses and spyware then Windows computer, it still can happen and it sounds as though it has happened to you. DO you have an Antivirus program on your MAC? If not I can recommend one that is free and quite reliable that I use on my own MAC.
I can provide detailed instructions for you to download and run these programs and also to check for potentially harmful browser add-ons, or if you'd like, I can perform these steps for you while you watch via the Premium Service of Secure Remote Assistance. This is completely optional. If you choose to do this, I can, with your permission, remote into your computer while you watch and work on the issue for you. If you do not choose to take this service, but need more help, we can continue here.