No support offered at all

We have recently moved into a property which already had a Solar Panel system installed on the roof of the property and we have inherited a 25 year contract with them.
I have asked several technical and non technical questions over how to assess what electricity is actually being provided to the house holder but they offer no particular guidance whatsoever.
I have asked for someone to come around and run me through the installation and how I can check what is being produced when but they have refused, saying only an electrician will attend and only IF there is a fault.
Clearly they will have been much more attentive during the initial contract and installation phase and they will be getting the electricity generated by their own system.
The also will not provide any guidance on any monitoring system such as an Owl system and just leave it to us to find a suitable monitoring system.
To me they should provide the correct tools to tell me exactly on an hourly basis what electricity is being generated for use by my electrical devices. All their website tells me is how much electricity is being generated on a daily basis but, for all I know, this may all be give to the National Grid and they pocket the profits!!
This is a very one sided relationship with NO CUSTOMER SUPPORT to speak of, unfortunately I have inherited this system and can see no easy way of getting out of the contract.
I am massively in support of green power and am happy having a solar system installed but it SHOULD WORK FOR THE CUSTOMER and not the company.
Not happy at all and I certainly would not recommend them to anyone I know who is thinking of having a solar system installed.