Mafube munisipality NO SERVICE

How can they hold me responsible for a high acoount after 34 years. My husband pass away in 2002, I did not know their was vacant land. Now I want to sell it. They never answer their cel phones . Land line and emails is off. I am in Western Cape and they in Frankfort. I need the clearance certificate. And I think their was *****, The title deed is on our names but when they answer me once the acoount was on another man name? And then they put it just back on our name and said we must pay???