Gussy Dup review for Klaviyo: Email Marketing & SMS

I'm a small business signed up to a PAID plan but cannot use Klaviyo because I simply cannot get any support at all. I've tried for weeks to get some basic onboarding assistance. Every time I manage to get a meeting booked in with someone from Klaviyo, they always cancel either at the very last minute or whilst I'm waiting for them to attend the meeting. They don't seem to cater for the Australian market (ie. all meeting times are US based) and I suspect that's why their 'support' team consistently cancel when the meeting is even close to AUS business hours (Note: I've even tried to attend in their own time zone however and still been stood up). A lot of time and money wasted so far with no result.