What (a) is the monthly amount of (i) petrol and (ii) vehicle maintenance for the visits of the departmental official to Loeriesfontein, (b) is the number of times that the SA Social Security Agency official, who handles grant applications, visit Loeriesfontein in each month, (c) is the ratio for an official to grant beneficiaries for Loeriesfontein and (d) number of beneficiaries are helped on a daily basis or during each visit?