Hello, recently I changed my subscription to NS flex Weekendvrij from Dal voordeel.
Dal voordeel cost 5.10 EUR and Weekendvrij cost 31.60 EUR per month.
But after I change my subscription to Weekendvrij I received an invoice with 36.70 EUR only for subscription.
I do not really understand how this amount of money is calculated.
At the moment I change my subscription from Dal voordeel to Weekendvrij, I already paid for Dal voordeel for last month. But after I change my subscription NS again charge me for the Dal voordeel + Weekendvrij.
Does anyone know why do I get double charge for Dal voordeel?
Thank you for helping.