Keep having to reset my email password every couple of days

I keep having to reset my email password every couple of days. I have been on the phone with Comcast security multiple of times. They all had me reset my password and I did. They then told me that I will not have this problem again. Lo and behold, a couple of days later I am told to reset my password again. I don’t understand why this is happening and it seems that xfinity doesn’t know either. Anyone else have a problem like this, and what did you do to get it fixed?