Stop call me and sending texts

Can someone from Jet accounts rectify the mistake that I think was made while capturing Mr.Jansen details, I have been receiving numerous calls and texts from Jet, *** is my mobile number and I'm not willing to change it as ive been using the number past 19 years. Kindly call and send account messages to the right person or delete my number from your system as I don't even have an account with Jet