Twyford Windows

We have had our windows installed by Twyford Windows. , registration The contract was also for 4 windows to be easy clean and we were assured that this is something we will have installed. Originally four out of the 9 windows installed were not what we ordered and paid for. They all suppose to be easy clean windows. When calling the proprietor, we were promised that the job will be corrected asap and new, easy clean hinges will be installed. First, the contractor didn't turn up when arranged, and didn't even inform us (we cancel a client to wait for him at home). Then I had to chase many times and finally the contractor came (without even apologising for not turning up) and changed the hinges on two windows only, claiming he could not fix the remaining two. I have again called proprietor asking for his company to complete the job as the windows we were left with were not what we ordered (I suffer from Multiple Sclerosis and cannot climb the ladder to clean windows). Finally the contractor came and tried to fix the new hinges. Whilst doing that, he damaged hinges on one window and frame on the other window. He then said that those are not the proper solutions and the type of windows we had installed are not the easy clean type. When asking him when he is coming to fix the damage, he said that we can cover it with the blinds!!! I did not accept this as those windows are new and demanded a resolve. I have clearly asked him if I should call proprietor, and he said no- he will talk to proprietor, find a solution and come back to me. Since then, I haven't heard from neither proprietor nor the contractor David. Last night I have received threatening text messages from proprietor sent to me at midnight and then about half an hour later. He said that I will be contacted by high court and bailiff as I didn't pay the last instalment (first was paid when accepting the contract, second paid after completion and third suppose to be paid a month later. I have called proprietor many times and said that I am very happy to pay ONCE the job is completed and he assured me that he will fix the problem. The only positive aspect of the whole situation was the original contractor called Mark who fitted all windows. He was very professional, polite, worked hard and was punctual. We were so impressed with his work ethic that we have sent a letter to both Mark and Twyford Windows appraising good service. Then we didn't know that the windows fitted were not what we ordered (easy clean). When we told Mark about this, he said that he wasn't aware that the windows supposed to be the easy clean type, he was fitting what was delivered.