Scam?

[Lavalamped]

So this is appears to be a scam as it's an unsolicited message. Do I reply 'STOP' as instructed (will this charge me?) or should I just ignore?

Unsure but it sounds like someone must have signed you up to this, using your mobile number. There's a support email address and phone number here: allsports-tipsters.com/terms

Thank you I checked my phone bill and there was already a £4.50 charge. I spoke with my network who said to text 'STOP' and they have removed the £4.50 already charged. I've also blocked any spending over my bill which will hopefully stop any more if they slip through the net! I noticed after I'd text Stop I got another 10p charge. They've not even provided me with any betting tips either