Didn't like this one. Terrible application, wildly inconvenient, the phone updates it automatically, but I don't need this disgusting one, it always competes with the phone, I can not send SMS because of stupid settings, and when you delete the phone it does not show who called, if this number is not in contacts you even cannot call back because of this, it had to be restored. Suggest trying SpamHound app for iOS. It's free, you can create unlimited quantity of spam blocking filters, filter SMS and MMS using Blacklist, it stops spam messages containing links, and no internet connection needed. And it doesn't interapts the work of your phone!!!!!!!!!!!!
In the UK you can always forward the spammers number to your service provider.
Just forward the message to 7726 (spells SPAM), making sure it includes the senders' number.