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Assuming you are wanting to contact them in English there is a GOV Form specifically for Contact UK Visas and Immigration about your application, when putting your information in it shows these results:
Contact UK Visas and Immigration in English
You can call or email English-speaking staff with a question about your application. Contact centre staff cannot give you advice about your personal circumstances.
By phone
Telephone: 00 44 203 481 1736
Monday to Friday, 24 hours
Calls cost £1.37 per minute on top of your standard network charges.
By email
Email UK Visas and Immigration.
Emails enquiries cost £5.48. You will not be charged for any follow-up emails about the same enquiry.
You are paying for the service so I'm sure they will try and answer your questions and hopefully get a better response than contacting UKVI. You are also not asking for advice as you just want to check the status of your application.