United States
How to complain to a US state utility commission
The state PUC is the most useful regulator most customers never call. Here is what it can do, what it cannot, and how to file.
2 Nov 2026 6 min read
Service guide
Postal & parcels complaints, contacts and escalation
Missed deliveries, lost parcels, damage and unresolved claims. Postal complaints split between letters and parcels, and the escalation route depends on the carrier and the country.
- Countries
- 4
- Providers
- 8
- Regulators
- 0
By country
Pick your country first
Complaint deadlines, ombudsman schemes and compensation rules are set nationally. Choose a country to see the exact route.
Providers
Recently added
RM
Royal Mail
Letters and parcels across the UK
EV
Evri
Parcel delivery to homes, ParcelShops and lockers
DP
DPD UK
Next-day and timed parcel delivery
PF
Parcelforce Worldwide
Express parcels in the UK and worldwide
US
USPS
Mail and package delivery across the United States
UP
UPS
Package delivery and shipping in the US and worldwide
FX
FedEx
Express and ground package delivery
CP
Canada Post
Mail and parcel delivery across Canada
Playbooks
Postal & parcels guides
How to write a complaint letter that gets a response
A one-page structure that works with telecom, energy and water providers in every market — plus the mistakes that get letters ignored.
2 Nov 2026 6 min read
United Kingdom
Deadlock letters explained: the key to the UK ombudsman
What a deadlock letter is, when to ask for one, and what to do if your provider refuses.
2 Nov 2026 6 min read
Missed appointments: what you can claim in the US, UK, Canada and Australia
A no-show engineer is more than an inconvenience. Here is how compensation works in each market.
2 Nov 2026 6 min read