I downgraded my Mailchimp plan from approximately R$ 4,200 to a R$ 68 plan. Everything was correctly adjusted in my account until the 21st.
On the 22nd (Sunday), I received a vague email saying that “something needed attention.” The very next morning, on the 23rd, Mailchimp charged me the full amount of the previous plan (R$ 4,200), despite the downgrade already being completed.
This charge was clearly incorrect.
I immediately contacted support. Instead of refunding the improperly charged amount, they refused to issue a refund and offered to leave the money as account credit — suggesting I would not need to pay the R$ 68 plan for the next 60 months.
This is unacceptable. I am not a bank, and I do not provide interest-free loans to large corporations. When a company makes a billing mistake, the correct action is to refund the customer — not hold their money hostage as credit.
This experience raises serious concerns about Mailchimp’s billing practices. Customers should carefully monitor their invoices to avoid unexpected and wrongful charges.
Based on this experience, I do not recommend Mailchimp and strongly advise others to be cautious regarding their billing system and support.
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