CONCERNING TALK TALK ISB.

One reads how fine the Tiscali Talk Talk Service is, however I have found it exceedingly troublesome over the Years. Last month but this, I was charged for a call allegedly made to its Directory Enquiry Service, before being put through thirty seconds later to the correct number off the Reading Telephone Exchange. Following complaint I was promised a refund of the money Talk Talk had taken from my Bank Account by Direct Debit, but I have not as yet been credited with this money. Is this ISP Provider to be trusted, or should I sign up with another?