I am the owner of the 604-771-0404 number and I do offer Jailbreaking services for Apple products.
I never cold call or spam random people for business though..What email address are the messages coming from?
I advertise my services on sites all over the internet and I even have my own website..I do not need to spam random people in some cheap attempt to get business.
Please feel free to respond here or give me a phone call if you have any more questions or problems.