Mailchimp: Email & SMS

REALLY frustrated :( i checked through mailchimp and shopify and shopsynce and see this: Features
Sync customers
Purchase activity segmentation
E-commerce tracking and reports
Product content block
Product Recommendation content block
Promo Code content block
Order notifications
Abandoned cart email
Abandoned cart postcards
Product retargeting email
Pop-up signup forms
Google remarketing ads
Sync ...

The app doesn't sync store data properly. Customer support said: "Just to be transparent, Because this is a 3rd party integration and was not built by Mailchimp, my troubleshooting abilities and knowledge will be limited." Are you serious Mailchimp? Remove this app from the store then.

Glitch in app that can cause wildly inflated bill. Reported the issue to mailchimp who said there is no way to prevent shopify from unarchiving currently archived contacts. For us that meant a one day spike in the number of our active customers. That meant a bill that went from just over $100 a month to over $800 for a month. Watch out for this glitch or you may be overcharged yourselves.

I am going to beg everyone to take a closer look at your data after installing this app. I have had quite spotty performance with ShopSync over the past 5-7 days. The initial install was seamless with all data syncing just fine. No problems with the baseline — the problem is going forward. I am using a plain-vanilla install of the Debut theme. The vast majority of my new subscribers are not ...

I use this app to send out welcome letters to my subscribers and it’s never sync. Out of about 50 subscribers only 4 emails went out. To me it’s no point in having the app

TERRIBLE product. Pages fail to load even after multiple refreshes. Content boxes in email template builder consistently don't respond. Can not even back up email template data. Customer support clueless and unhelpful.

For all last week trying to reconnect to my account but my emails and articles aren't there contacted several times support but each time received answers
with questions rather than answers!
Not abel to contact by phone although I have paid for pro account $90.00
No phone number exist?

Lost over 10k of my audience somehow as Mailchimp have moved away from Shopify then back after buying ShopSync. Very dissapointed to say the least! :( **UPDATE** I am not sure why they have edited the review to make it seem like there is a solution. After going back and forth with a rude customer service agent who took 24hours to reply and made it seem like my fault, they finally offered me £50 - ...

Used to be good and for a great price, but have continuously increased the pricing so that they are now one of the most expensive for fewer extras than their competitors. Have been with Mailchimp for over 7 years, but the last price hike was one too many I'm afraid. Now moving to another company!

I seem to have lost the majority of my subscribers since this change was made. This needs fixing asap and it's not good enough.