The worst customer service Ever!

I made an on-line flight booking today for my family of 8 to go to Menorca. After completing the form and filling in my bank details, a request came back saying 'try again'. Knowing there was more than sufficient funds to cover the cost, I assumed I had made an error on the form. Two further attempts came back with the same request.
I called my bank, who confirmed the cost of the flights (almost £3,000.00) had been withdrawn from my account, but I had still not had confirmation from Thompson of the booking, so called thier customer service centre to check.
After being kept on hold for 20 minutes, I clearly and calmly explained to the Indian call centre adviser that the money had been taken from my account, I was told the call centre wouldn't confirm the booking for a further 4 hours, (this call was made at 4.22 pm)
Without confirmation of flights, I couldn't book the last available accommodation in the area we wanted, so called back at 7.45pm. I was told the computers were closed, and to call back the next day.
I have now lost the only available accommodation, so the the flights are as useless as Thompson's customer service.
What should have, and so easily could have been a simple and pleasant start to our holiday, has been a complete nightmare.
I would not recommend Thompson to anyone. The service is shocking, and more worryingly leaves me to wonder what extent they will go to, to save a few quid!!!!!!
Disgusting!!!!!!