Bad Customer Service

I ordered stuff on line, order number p ********** 68 on the 25 April 2017,it got to the payment part I try to pay and it was unsuccessful even though I had money, I then get an email that my order is awaiting payment, I use the link to try and pay again, again it says unsuccessful, I must have tried more than 10 times, still no luck, I sent them an email today on the 28 complaining about it, they respond and acknowledge that they have issues, but later they send me an e-mail to tell me that the order is cancelled, but it wasn’t my fault why do they then cancel the order. This is very bad customer service.