Thank you for posting your concerns in the Community.
Receiving erroneous calls is definitely annoying, for how long do you have your number? Currently, what phone are you using? You should be able to block or add the number to the auto reject list.
Welcome to the Rogers Community Forums !
Are you inquiring about how to block unwanted calls for a cellphone or a home phone? May I know what cellphone are you currently using?
Need a little bit more info. to assist you further.