Cat5 houston

I had McAfee on my computer, "protecting" it and it not only did not work, their scans showed my computer was fine. My bank alerted me to check my computer. Even though the scan showed it was not affected, I contacted a professional who came to my house and ran scans and it had serious malware, affecting the power frame. I had to actually get a new computer and have all my data scanned using another (better) malware program. McAfee said I should have called them not an IT professional so they could have fixed it (how?? Their program showed nothing wrong). It cost me $1600 in new computer and