Monek vs SumUp : most-reported complaints compared
Most-reported issues at Monek and SumUp , according to reviewers on Trustpilot — classified by our automated reader and backed by verbatim quotes from distinct reviews. This is a side-by-side of what reviewers report, not a score, rating or recommendation for either company.
Monek
TrustScore 4 · 7 reviews on Trustpilot.
7 reviews analysed, 2023-05-12 to 2026-03-26.
Complaint rate (recent window): 29%
0% of negative reviews get a company reply.
“They charge three times more then other with absolutely rubbish costumer services.”
SumUp
TrustScore 4.2 · 57,762 reviews on Trustpilot.
2,206 reviews analysed, 2025-09-16 to 2026-09-23.
Complaint rate (recent window): 16%
89% of negative reviews get a company reply.
“I’ve been ignored and blanked for nearly a month. I’ve even put in a complaint and that’s been completely ignored.”
Reported on both
Issues with an evidenced category (at least two verbatim quotes) on both sides.
| Issue | Monek | SumUp |
|---|---|---|
| Support unhelpful | 100% | 32% |
Method: reviews are classified into a fixed complaint taxonomy by an automated reader; every category shown is backed by at least two verbatim quotes from distinct reviews. Figures are census classifications, not official statistics, and reflect what reviewers reported — not findings of wrongdoing by either company. Not affiliated with, endorsed by, or sponsored by Trustpilot A/S, Monek or SumUp .