Money grabbers

I received an sms requesting payment for a blood test from my heart specialist in December. Last saw the heart specialist in August and at no time did he request any blood test. How Lancet got info that I had blood test for that doctor in December is a mystery. I even checked with the doctors accounts department and they confirmed that no blood test was ordered from Lancet for me. i have sent numerous email to the call center and even phoned them without any luck. Useless too much automation nobody with half a brain to talk to at Lancet