Mr Price poor customer service

On Friday I purchased clothing on MRP online and paid with my MRP account. The order went through and I was emailed confirmation of my order. I went check when my order would be delivered and saw that the status of my order still had not changed so I phoned the customer care to find out why my order was taking so long to be delivered, the call centre agent Reagan said he would let me know what was going on with my order. I received an email from Reagan stating that there was a problem with payments on Friday and that my order was cancelled my money would be returned and that I must reorder the clothing. I phoned back upset because the item I wanted was the only item like it online at that price as all the other similar items cost more, what unsettled me more was Reagan telling me there is nothing they can do about it. That is unacceptable as I had to waste my airtime rack up my phone bill to be told this which is not my problem or fault they couldn't even have the decency to contact me at any time to inform of the problem so that I could reorder the item while it was still in stock. This is MRP problem and I should be given a similar item of clothing at the same price I paid.