Number overview
0800-300-3052 is a toll-free number (the 0800 prefix). It is reported as a sales call from a mail-order operator.
Reported behavior
- Mail-order operators making product or purchase pitches over the phone have been reported
- Calls may arrive even if you've never bought from the operator before
Under the Act on Specified Commercial Transactions, re-soliciting consumers who have refused phone-solicitation sales is prohibited.
How to handle this call
If you don't need it, decline with "I don't need it." If a caller rings again after you've already refused, they may be in violation of the Act's anti-resolicitation rule.
Sources of the reports
The descriptions on this page are based on user reports posted to third-party phone-number directories (checked as of 2026-08-03). This site has not independently verified the caller, and nothing here identifies the caller definitively. The reporting sources we checked are:
- Number-lookup articles via Hatena Bookmark: reports of mail-order sales calls in the name of Shop Japan
- Telnavi: user reports describing Shop Japan campaign calls
- Social media (GRAVITY): similar incoming-call reports
Where to report or get help
- Consumer Hotline: 188