Fido sent me an unacceptable bill

Well, I became a first-time customer last May, having a plan (100 minutes + Unlimited evenings and weekends + Unlimited text messages) for 2 years.
By the way I have had already two bad experiences with Fido.

Bad experience

Subscribing to Fido, I got a promotion which was supposed to take off the first time activation fee. I have still the confirmation number :158323523.
I was told that it would be applied to the next bill, in June. I got my bill this month, but did not get it. Calling back to Fido customer center, I got an answer that they just forgot it.

They just forgot it!!??

Worst experience

I usually make international call once a week to my parents, using prepaid calling card, which could purchase in any convenience store.

When you usually make an international call, using calling card,
the steps are all same something like --

- Dial your access phone number from your area, using cellphone, homephone whatever.
- Press your calling card pin number.
- If it's connected, you hear voice message something like
'Your balance 5 dollars, 45 minutes left.'

But, you know what?
Fido charged me 32 extra dollars for international call even though I used my prepaid calling card which I bought in a convenience store.

I got so mad and talked to Fido agent on phone.
The agent explained me it would happen sometime and anytime even though people use their own calling cards. How come?

The solution from the agent?
Just make sure if your calling card is well connected. Otherwise Fido will charge anytime although you make a call with your own calling card.

Of couse yes!

I used my prepaid calling card as usual. I've used calling cards since 2001 and naver had these kinds of experience when I used home phone or public phone.
When using a calling card, I usually get a failure message if it's not connected.
So I know well if it's connected well or not.

I asked some of my friends, who use Tellus or Rogers service and often make international calls, using their prepaid cards, if they have had same problems. They all said no.

Fido really bugs me a lot.