Gigadat is a Canadian bank-login payment method, not a casino: a Gigadat casino deposit lands instantly or in a few minutes, with 0% from you, though the casino may charge.
How it works
The cashier hands you to the Gigadat gateway and you approve the payment in your own bank. The casino credits your balance only after the bank confirms it.
When you tap pay in the cashier, the casino passes the request to the Gigadat gateway, which sends you to your own bank to sign in and approve the transfer. On a phone this means a jump to the bank app or a browser tab and then a redirect back to the cashier, where the balance updates instantly or within minutes. The minimum is C$10, or C$20 at some casinos. A single transfer stops at C$3,000 and the daily cap sits at C$5,000 depending on the casino, so only one full C$3,000 deposit fits into a day and a second top-up is limited to C$2,000. If the redirect back to the cashier breaks on mobile, check your bank history before paying again, because the bank may already have approved the first attempt.
A payout starts at C$20 and tops out somewhere between C$2,500 and C$7,000, depending on the casino. The 1–3 days, sometimes up to 5, cover two separate legs: the casino's internal review of the request and the payment leg back to your bank. The published data gives no figure for how long the review alone takes. If the cap applies per request, a C$7,000 balance at a casino with a C$2,500 limit needs three requests (2,500 + 2,500 + 2,000), and each one can sit in the review queue on its own clock.
You authenticate at your own Canadian bank, not on the casino's page, and Gigadat charges you 0%. The casino can still add its own fee, and the method data gives no figure for it. The licence, the limits and any casino fee are set by each operator, so read them in that casino's cashier and terms, on the phone you actually use to play.
Check in the cashier: limits, fees, payout window. Do it before the first deposit, not after the withdrawal request.

Casino list
Open the list, pick a Gigadat casino and go straight to its cashier, where the minimum, the cap per deposit and any casino fee show before you pay.

The minimum is C$10 or C$20 depending on the casino, with up to C$3,000 per deposit, payouts in 1–3 days (up to 5 at some casinos) and 19+ in most provinces (18+ in some), so set a deposit limit before the first payment.