Service plan claim denied!

Reference number for this query is CAS-***-V9G7M5. I extended my car service plan with the company in December 2019 when my car already had a service. The plan was suppose to cover me for a total of 3yearly services. The two other servers from 2020 and 2022 where done without any challenges. My car was due last week, I booked it in as per usual only to be called by the dealership that the claim was not accepted. I went on phone calls with liquid capital and they said the case is transferred to their sales department to verify how I got sold the plan with the mileages on contract. I have not recieved any feedback and my care is for a service.I pay my premium well and inclined that my plan is expiring December 2022.(and doubtful if I will continue with the organization if this matter is not resolved) I would really appreciate feedback on this matter as my car is due.