Completesave.co.uk and mytimerewards.co.uk are online discount retailers. Usually for £15 per month. They are usually started by making an online payment of some kind ie PapaJohns, Trainline, Argos etc which asks if you want a discount. By ticking or unticking a box you get the discount but in the background will sign you up for the £15 per month but the £15 won't start charging you till the next month. Its simple to fix. First contact your bank who can stop any other transactions to the retailer and then contact completesave via email or phone number (obtained on their website). So long as you havent used the discount facility after the initial transaction then completesave can usually refund you in full. Please note it is always the previous month almost to the day when the first £15 comes off is what triggered it. So if you have seen complete save in 15May then look at your statement for roughly the same date in Apr and you will often see the online payment that started it. Always check your bank statements on a regular basis for unusual activity. Also please contact your bank to have them stop any future dated payments if you do not wish to be charged again.