Paying Maintenance Plan for no Service

I had my right indicator bulb replaced last Thursday. I was at Paarden Eiland and tested with the customer service agent Lucinda who admitted her agents worked quickly on the job.

Yesterday my left indicator bulb went. Gareth Beck the service manager is saying they cant test or do anything and I have a maintenence plan.

I need the electrics checked on the vehicle to understand why the bulbs went. If Ford is not willing to assist further steps will be taken