An Absolutely disgrace of a company. I receive at least 4 calls every day from different people in Carphone Warehouse telling me that I am due for an upgrade on my Contract, I am not due an upgrade yet but yet but they still call every day. I am not a Carphone Warehouse customer and have always dealt directly with o2 so I am unsure where they have got my details from, when I ask they wont tell me. I have complained to them a number of times about these phone calls especially as my mother has been seriously ill in intensive care and I am often waiting for calls from the Hospital. Despite complaining and promising they will take me off their lists they still call me multiple times a day. As a senior Director of my own business I often have to purchase new Mobile contracts for my employees and after this harassment I will never use Carphone Warehouse.