I was charged 2 instances of $49.95 or something like that, the merchant description was some 8 # value and then a name... don't recall what exactly (sorry, not very helpful, I'm sure I will remember it later or I can look it up).
Earlier this summer I had signed up for a free trial on a foreclosure site. 6 days later I canceled that site to avoid charges. Ends up that when I signed up with this site they 'mistakenly' signed me up for another foreclosure site (or something) which had a 40 day free trial, after those 40 days I started seeing $50 bills each month that I didn't know what they were. The first month I figured it may have been some random store and it didn't seem too unlikely until I saw the same price come through a 2nd time from that merchant same merchant the 2nd month. When I saw the 2nd bill from them I called in to ask about it and fight the charges.
I called in and they got it straightened out. refunded me my $100 or so... I know you have been house hunting so if you have signed up for any of those foreclosure sites it may be interesting to see if it's something along those lines. When I called the company about the charges they said "oh you must have clicked accept on our offer from xyz site".... I told her I was 100% sure I clicked 'no thanks' on every offer.
Alot of the time there is a phone number associated with the merchant you purchased from (along with the other information on where that charge originated). I have BofA so I could pull it up right from the internet. Otherwise you may have to call in and ask or go to a branch to get the phone #. Call them up and ask who the hell they are. Also, do a google search for "charge on my account $119.95". I did that and found several other people who had been hit with the same charges which helped me track down what the merchant was. Also search the phone number and merchant name if you can get that info (include the charge amount in the search). Alot of times if people see an odd charge they will post in a forum somewhere with the info on it asking for advice. I got plenty of info on my charges from forums