Phone scam about new plan

I just got caught in this scam today . Someone call from a number I did not recognize and then offered me a 40% discount on my home services I said I did not trust him and could have a call back number. I too got the official looking email from telusstock.com.  He said after he sent the email he would call back. While I was waiting for the callback I called the regulat telus customer support line. To be fair the representative I spoke to said there was no such offer and it was probably a scam - she did however say that telusstock.com was Telus technical support department -weird?  We agreed that this was probably a scam as she said Telus would only call with a number that our call display would recognize.

When I hung up from her the phone rang again and this was 1-888-811-2323 and the rep they were calling about the offer they had sent the emailHe explained the offer again and I said fine and then he sent my call to someone else. What cause me to end the call was that the next person I spoke to wanted my birthdate as he was going to sign me up for a new plan and needed this . I said I was not happy and wanted to speak to someone they said to call Telus and ask for a John Marshall. At that point i ended the call.  I  did not offfer any personal information except for my email address. I guess it is fair say if something is too good to be true it most likely is not