Note: I have not had my windows fitted by Zenith so I can't comment on the quality of the product but I can comment on my meeting with them yesterday.
I had a cold caller yesterday about 4pm who asked if I wanted to replace my windows - we agreed I could get a 'quick' quote that evening and I wouldn't be pressured in to anything as the quote lasted two years.
That evening a gentleman came 20 minutes later than planned, he could see I was trying to settle my two young children for bed at it was 6.50pm by the time he arrived so I assumed he would be quick.
He did not leave until after 9pm! I am so angry, I lost my whole evening.
I told him several times I had not had my dinner or bath and had to be up for work at 5am but still he sat there talking about the tech specs of windows for 2.5 hours! I didn't want this information, I simply wanted a 'quick quote' - should I have wanted to proceed with the quote, I would have gone in to further detail. I felt uncomfortable as I think I made it clear I wanted him to leave my home.
He even had the cheek to go upstairs to measure up (a second time) when I had told him my children (who had now been put to bed by my equally exhausted partner) were asleep and the floorboards are creaky.
I am quite shy and felt awkward being rude but I made it clear in a polite way I wanted him to go! It is utterly disgusting to intrude on someone in there own home for such a long period of time.
He even listened to voicemails and replied to text messages while in my home - how rude. Also, he tried to pressure me in to credit/pay monthly scheme (even after I made it clear I was not stupid enough to go down this route).
I would NEVER use this company, simply based on the above.