On the 21st August we purchased a package holiday via the MyTravel / Direct Holidays website and paid using a Visa Debit card over the internet. I noted after I had paid that we could have upgraded to Premiair Gold Seats for a cost of £133 per person.
When we picked our tickets up from your desk at Manchester Airport I showed the print out that showed the £133 extra per person to upgrade to the lady behind the desk and asked if there were any of these Premiair Gold Seats remaining - after checking on the computer she informed me that there was and that the price had come down and was now £120 per person, she gave me a slip of paper stating £240 to be paid and told me to take it to the customer services desk situated by the check in desks. We then parted with a further £240 for the upgrade.
We then proceeded to the Premiair check in desk and on the outbound flight we were given seats in row 5 in the Premiair cabin (which were fantastic)
On the return flight we proceeded to the Premiair check in desk and received our boarding cards for row 10, it was not until after we boarding the aircraft that I discovered that row 10 was not situated within the Premiair cabin area of the aircraft. I explained the situation to a steward and he told me that Premiar seats were still available but I must pay an additional £110 per person if I wished to be seated there - which I find totally outrageous as we had already paid for these seats at Manchester. The steward was of no further help and refused to allow us to be seated in the Premiair cabin and simply gave me a customer survey form to fill in. The return seating was more important as it was flying through the night with an early morning arrival back at Manchester Airport where I then had to drive for a further 3 hours to get back home.
As I took my seat at row 10 the further 2 passenger arrived at their seats, these must have been 2 of the largest people on the aircraft in excess of 30 stone each and where that large they had to raise all the armrests just so they could get into their seats, which also meant that they over spilled onto half of my seat, so not only did I not get the Premiair seat that I already paid for in advance I didn't even get a full seat that I was told I must be seated at.

I wrote to MyTravel on the 15th September with the above and enclosed the following text...

As I no longer have the original print out of the additional costing of the upgrade for the flight in question I have included a printout of a holiday leaving on the 18th September to the same destination on your airline - this shows that the Premiair Gold Seating as an additional cost of £119 per person, which is actually less than the £133 per person when we flew out on the 28th August
I require an explanation as to why the seats that I paid for were refused to us and some form of compensation for the inconvenience, ideally the full cost of the upgrade. If I do not receive a satisfactory response from you I will be taking further action and will be forwarding all correspondence onto Ros Fernihough Travel Law Solicitor who will then deal with this matter.

It is now 1st October and I have still not received any communication from MyTravel

Has anyone else had cause for complaint with MyTravel and how long does it take for them to reply -- also any other advise on what to do next.