Regarding 01254 277054 phone number:

Call Ofcom (020 7981 3040)to report that you are getting repeated silent calls from this company:

GM Connect (Director, Company Secretary, is: Omar Qamar)
6 Chatsworth Close
Blackburn, BB1 8QH
Lancashire County
United Kingdom

Please leave this message in place for other to see, or copy and paste it into your new message, thanks !

PS, These 01254 220754 calls are very annoying, but the good new is they are not scamming money from your mobile, and reporting to Ofcom will solve the problem, so just ignore the calls.