function forceEndCall() public {
    
    require(activeCall[msg.sender] != 0x0);
    
    require(endCallRequestDate[msg.sender] != 0);
    require(endCallRequestDate[msg.sender] + endCallRequestDelay < block.timestamp);

    endCallRequestDate[msg.sender] = 0;

    
    recipientsMap[activeCall[msg.sender]] = 0x0;
    
    activeCall[msg.sender] = 0x0;
  }