Assuming you are saying the truth (that you are their customer) - you seem to be in the minority. There are several discussions
here (Acanac - $12.95 Cdn/month Unlimited Long-Dist. BYOD Provider) and on dslreports that show very high level of dissatisfactions with acanac.
Assuming that you are not saying the truth (that you are affiliated with them and don't want to disclose it), it would be consistent with the opinions that others expressed.