Telecoms Business Character

I am looking for a 'happy character' to put on my print marketing for my business.
These marketing flyers will be posted to businesses in the local area & I want them to feel like the business is war, happy and welcoming - encouraging them to contact us from receiving cold mail.

I have uploaded some examples. It can be a character who is happy and on the phone saying "call us!" or a phone itself with eyes and displaying personality. I want the character to stand out, so perhaps an accessory in a different colour the company branding would be good - company colours are on the logo uploaded. Something to make it different from a generic character.