Ordered 250 cupcakes, and wanted to add a $1750 "driver's fee" to be paid to the driver upon pick-up of order.

Those had better be some D**M good cupcakes!

Same thing happened to me. Ordered 250 cupcakes. When I searched be number, I found this. Same text message and everything. Email is different from the name given.

Yeah the credit card will be reversed.  the driver conveniently doesn't accept credit cards so you need to pay him by Western Union or some other untraceable means.  Forward the email address to abuse@ (name of email server here).  Forward the text to 7726 so that your carrier blocks further attempts.

Thanks. Will do.