Telus promotions - phone and internet plan - Is it a scam ?

[wireless]

Hello,
I've been receiving phone calls saying it is from Telus promotions, for the last couple of weeks.
They seemed very legit and the plan seemed very true. The only reason I had believed it was because my husband had got such an offer previously from a different service provider and it was legit.
But anyway, they sent me an email from promotions@salestelus.co and I totally thought it was legit.
They were asking me for my full name, email and address, and I gave it to them.
But then they asked me for my credit card details and I said I wont give it to them as it is private information and I dont want to go ahead with the offer.
I am not sure if this is a Scam, but wanted to report this.

Also, once I said a No and cut the call, I started getting continuous calls from other numbers. I picked one and there was a guy on the other side who asked me if my name was this, and if I worked for telus ?

If this is a scam, seems to be a complicated scheme. Not sure if they are spoofing phone numbers.

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