Prolast, Castel, Dpass, Mazuma fraudulent charges Internet

I recieved 5 charges to my cc account on 11/26/07. the one showed a company name of CASTEL and was for $2.87, the second went through under the name DPASS and was for $1.00. later that same day charges for $39.95, $9.82, and $39.73 all went through under the Names listed above and under MAZUMA. all of the charges had the phone number 18009341875 attatched to them which when searched on the internet comes back attatched to PROLAST. The final three amounts are identical to other charges made by this company. My credit union is treating this as a fradulent charge, having the exact amounts that were reported on this site to show them helped them with the decision to handle this as such.

Michael
eagle mountain, Utah
U.S.A.