Most of the reports point to Crystal Windows calling in a classic home‑improvement telemarketing style – often with long periods of silence before hanging up. The callers ignore the Telephone Preference Service, so the best defence is to block the number on your handset and add it to any spam‑filter list you use. If you answer, politely ask to be removed from their calling list and note the request. For persistent offenders, report the number to Ofcom and consider a call‑screening app that flags silent or unknown calls. Keeping a record of the calls can also help if you need to lodge a formal complaint.
TPS registered, yet still getting nuisance calls
Missed call from an unknown number. No message was left.
crystal windowz cald me
Extremely frustrated
they keeep caling
This number rang me, but there was silence on the line, and the call was terminated after a few moments.
Crystal windows did a terrible job fitting my windows last June, and now they wont leave me alone, I've blocked and reported them as spam, they still expect me to use their services
Kept getting calls from this unidentified number without any voicemail.
Irritating to the core
Crystal Windows sold us a product nearly a decade ago. Despite my repeated requests to cease calling, they persist. It's incredibly irritating and seems pointless for them as well. I've blocked this number in hopes of ending these nuisance calls.
Number not recognised, no message left. Annoying and unwanted.
I received a voicemail from this number, which consisted of 30 seconds of silence before hanging up, leading me to suspect it was a blocked number, possibly from Crystal Windows, a company we had previously dealt with.
Ive been recieving alot of calls from this number, 37 in just 5 days, its pure harrasment and i wont be answering it!
I'm receiving repeated calls from this number without messages. It appears to come from 01708 772410 and 01708 772500, likely the same caller.
Although I haven't answered calls from this number, it appears to be associated with Crystal Windows, a company from which I received a quote approximately three years ago
Crystal windows has been calling repeatedly, sometimes up to three times daily.
We had a phone call from this number, but when we didnt answer, they just rang off without leaving a message, bit weird
The caller rang and then hung up, which was a bit strange
Based on previous comments, it is probable that this number is associated with Crystal windows. The caller hung up after hearing my pre-recorded message. I recommend ignoring calls from unknown numbers, as I do, unless the caller identifies themselves.
The caller rang twice and hung up. I had to look up the number to identify it.
Possible scam related to Cristal windows
Double glazing sales pitch
Nuisance calls despite TPS registration
Home improvement sales pitch
Hung up upon realizing it was a sales call
Crystal Window making unwanted call
Initially uninterested, then the caller became aggressive
Ignore this spam call
Requested removal from calling list
Dont want they're window
