Portuguese to English Bus/Financial Law: Contract(s) Services Contract - Maintenance and Technical Support

Dear Colleagues:

I am translating a services contract from Angola. In the Clause having to do with Força Maior the following sentence appears:

"Não obstante o previsto nos números precedentes, ocorrendo evento de Força Maior, a Parte em relação a qual a prestação da outra tenha sido realizada, sem a correspondente contrapartida, fica na obrigação de repeti-la a favor daquela que a prestou."

Up to this point in the document the term "prestação" has had to do with "prestação de serviços." However, here it seems to mean "payment," a payment made without consideration, which would have to be remade in the event of Force Majeure. Am I understanding this correctly? The wording is rather convoluted.

Many thanks in advance for your help!

Douglas