Talktalk broadband - replacement router made no difference

An update on our ongoing problems trying to get Talktalk Broadband installed.

Our replacement router arrived and we tested it as requested.   No luck .... still we have no DSL sync on the line.  So the next step is to arrange a BT engineer to visit our house.  The OCE's on the forum asked us, as they do for all customers, to accept possible "Time related charges" from BT as a result of this visit.  Whilst I understand the reason for this, I do not think it is right to accept open-ended charges.  All they advise is " a minimum of 120 gbp ".  As we've followed every piece of advice of TT for troubleshooting I'm sure it won't be a problem, but you never can be certain....what if BT find no fault and the issue is actually inside TT?  Will I be charged? ...... so in accepting this engineer visit I fully expect (given past experience) that a prolonged battle with Talktalk will ensue.....

For the public record here is what I posted on the TT forum to let them know  :

Hi,

I accept possible time related charges.  However for the public record I will point out now that, should BT find no fault on the line and invoice charges to us, I will be seeking compensation from Talktalk for any charges incurred as a result of a visit.  I will do this through official channels outside of this forum (complaint procedure & independent regulators).  I say this as we have followed all of your advice to troubleshoot the issue, we've been waiting 4+ months, and given past experiences I am still not convinced the problem is not within the TT systems (for which I cannot be held responsible or incur charges)