Telecoms operators in the Channel Islands are required to publish their minimum service levels, any exceptions to these, and the compensation or refunds which will be offered where service levels are not met. These service levels can be found at the links below:
Airtel
https://www.airtel-vodafone.com/assets/pdf/Consumer_code_of_conduct_Oct_14.pdf
JT
https://www.jtglobal.com/global/customer-promise/
Newtel
[Not supplied]
Sure