I had at least 2 calls from a number I didn't recognise. I phoned the number back (01844 398610) to see who it was and what they wanted. I'd obscured my No with141 before dialing. They answered straight away saying they were EE. (Lies). My suspicions arose straight away, as like a lot of companies EE make you trawl through their boring menu prior to speaking to a person. I challenged them etc, and they were soon off the phone. As an EE customer I phoned EE and explained the situation. They said the company is called Interact and is one of the partners they use and not part of EE. EE explained that this company phones customers offering them an upgrade if eligible. So, I wanted to know how some company would know I was eligible (and had got my data). "We gave it to them", the EE rep said. Marvelous! I shan't bore you further with the remainder of the call. To me this sounds like sharing of my data.