Other services paid via mobile phone

I have received an "SMS invoice" from another company. What is this? 

In addition to the services provided through short numbers, there are also several other providers of payment services that can be ordered via mobile but are billed separately by the respective company or deducted from a pre-registered bank card. If you encounter problems with payment services purchased through another company, you should contact the company that sent the invoice directly.

Some public transport companies have chosen to use other systems for SMS tickets, such as SL and Västtrafik. If you have received an invoice that includes charges for SMS tickets and you have objections, you should contact your public transportation company or the company that sent the invoice.