refusal to pay my car service interval

i am an existing policy holder with the company (warranty and service plan policies). A consultant from the company called me few weeks back to extend my service plan which i agreed to. Part of the discussion with the consultant was his enquiry about current kilometre readings on my car, and i have also indicated to him that my car will be due for service for 150 000km asking him if it will be covered for service - whcih he confirmed that it will be covered. he also agreed to send me the policy via email - todate i haven't received. the following week i took my car for service but the Innovation group refused to pay saying that my policy stipulates that it will only be serviced at 160 000km. i have been using their services to service my car on 10 000 intervals, why this time the 150 000 interval is not being considered. last week i enquired with their customer service and they promised to provide (same day) a recording of my conversation with the sales person, todate i have not yet received the recording from them.<br> <br> based on my understanding as per the conversation, i delivered my car for service at the dealer, however, due to Innovation group refusal my car was not serviced