Received a call from this unknown number. A voice message was received but inaudible as there were 2 people speaking over each other. Next received a text " Who is this". Later in the day received a second text "I said who is this if you can't answer in the next 5 minutes your number will be blocked". This was followed 7 minutes later by another text "Ok have it your way YOURE BLOCKED". It seems to be lost on the caller that I never instigated the call in the first place.