Double Billing For Bookings

I recently made a few bookings with Travelstart and 2 of which (done 4 May 2015) I have been double billed for. When I called Travelstart to enquire I was told there is nothing they can do on their side and that I must query it with my bank. However for the bank to try and do anything about it or investigate they will have to charge me for it.<br> <br> Hence now I sit in a situation that I have been double billed, my account has a negative balance which messes up my bank/ credit record, I incur bank charges for the negative balance and I have to incur further bank charges( x2) to try and get the 2 double deductions sorted which the bank advised will take weeks, which will affect my other payments that need to go off, which will mean further bank charges!!!!!<br> <br> I am highly disappointed and disgusted about the service, process and the whole mess I find myself in . Also i now worry about the other bookings I made whether I'll be facing further problems.<br> <br> Totally shocking, never again will I use their services or advise anyone to do so. I will do my bookings directly with the airlines!!!