Please set me clear on the following in bold.
Numerous customers say the company offered them a guaranteed savings rate yet were never told what interest rate they would be charged; others were marketed a credit card with a promise of no annual fee but forced them to buy credit protection.
In the above, What does "buy credit protection" mean? I can translate it literally, but I don't understand the system. And who or what is the subject of "forced"?
Now I get it.
Thank you for the explanation.