> telecoms have come under fire by charging sky-high overage fees for mobile data Telecoms is a very heavily regulated industry. > Also, immediately dispute t

> telecoms have come under fire by charging sky-high overage fees for mobile data Telecoms is a very heavily regulated industry. > Also, immediately dispute the charge with your credit card company No, don't do that. Most credit card companies require you to try and resolve the issue with the merchant before filing a chargeback. Sometimes they give you a time period, e.g. at least 30 days.