Business community Sakeliga has sent a letter of demand to State-owned Eskom, indicating that any attempt to cut the supply of electricity to the Tshwane metro will lead to urgent litigation.    Sakeliga’s letter follows repeated threats made since August 23 by Eskom that the beleaguered utility might cut all electricity supply to Tshwane because of the metropolitan municipality’s overdue debt of R1.6-billion. This would include cutting electricity provision to those businesses and residents who dutifully pay their utility bills every month.   Sakeliga said on September 2 that, while it supports legal and rational debt recovery by Eskom, it does not condone such wholesale threats that are both illegal and irrational.