Used it but had concerns. Quite a few phone numbers came back disconnected. Bought it while building a la pino'z pizza locations prospecting workflow for India. Would consider buying again if a credit or refresh is offered for the bad rows.
Sorry the file didn't fully land for you, we treat this kind of feedback as a defect, not a one-off. Open a Support ticket via the Help → Contact Support flow with a few examples and we'll make this right.