Very bad aftersales service

Very bad service received - I phoned cancellations to cancel a number on contract which I have been paying for for years but never used the number, I don't even have a simcard with this number. They then countered by offering me a very good deal with a simcard delivery within 3 - 5 working days, we are at the 3 week mark and every time I call there is no order or anything on the system - No simcard coming just nothing - I even have the order number which now also means nothing as there is still no order according to the representative I spoke to today. They want your business and money and will do absolutely nothing to get it.