A telemarketing call from a company calling themselves "Consumer Services" offering a service to lower my credit card interests rates. They did not specify a specific card company, but rather claimed that they worked with ALL major US credit card companies.
After politely telling the caller "I am not interested. Please place me on your do not call list" THREE times, she called me an 'idiot' for not wanting their service.
I suspect that this is a scam to gather your account information for identity theft and credit card fraud.