iPhone not dialling correctly from Contacts

Since installing iOS 13.1.3 my iPhone X has stopped dialling numbers correctly from Contacts. For example in Phone I tap Contacts and select the contact I want to dial. Strangely the format of the number looks like a French configuration (digits paired up). Then I get it goes to dial assist and then then audio message "number not recognised". Or I get an incoming call from someone on my Contacts and it doesn't show the name just the number. Or I sent a text to someone on my contacts and it prefixes the number will a completely different country code. i.e. +32 when the contact in the UK. I've tried restarting it.