Your Service Provider is only responsible for maintaining your phone line upto the master socket in your home or business premises. After this point the wiring belongs to you and you will incur a hefty charge if the fault is found to be your wiring causing the problem. The engineer will not repair the fault just disconnect the offending wiring.
Cotswold Connection will diagnose the problem and repair the faulty cable if proved to be the cause of the issue normally for less than the cost of an engineer sent by your service provider.
A same day response is available for faults requiring urgent attention.