@jan I jumped on a promo by them. But that was not the main reason I changed providers.
#MobileVikings, as it became a part of #Proximus caused connection issues on my commuting route (train). The place where I would use a #mobileconnection most often. Mobile Vikings used the #Orange network which always worked for me. #HeyTelecom does still use that network.
After more than 3 months of use I am happy to have made the switch