Stop expanding UITableView from reloading contents incorrectly - Swift 3 - ios

Question

I have a UITableView that expands when a particular cell is tapped. My problem is that on first load or expand of the table the additional cells load the contents correctly but with successive closing and expanding of the table things load incorrectly.
My code:
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let currentCellDescriptor = getCellDescriptorForIndexPath(indexPath)
let cell = tableView.dequeueReusableCell(withIdentifier: currentCellDescriptor["cellIdentifier"] as! String, for: indexPath) as! CustomCell
if currentCellDescriptor["cellIdentifier"] as! String == "idCellTextfield" {
cell.photo.image = globalVariable.images2[(indexPath as NSIndexPath).row]
cell.name.text = globalVariable.names2[(indexPath as NSIndexPath).row]
cell.price.text = globalVariable.prices2[(indexPath as NSIndexPath).row]
cell.unitPrice.text = globalVariable.unitPrice2[(indexPath as NSIndexPath).row]
cell.pPrice.text = globalVariable.previousPrice2[(indexPath as NSIndexPath).row]
//This is the portion of code that loads incorrectly
//This code identifies if an item is on special (true or false) and if it is adds a border to the left of the cell, specifies saving amount and changes the colour and style of some labels.
if globalVariable.specialBool2[(indexPath as NSIndexPath).row] == true {
let attributeString: NSMutableAttributedString = NSMutableAttributedString(string: globalVariable.previousPrice2[(indexPath as NSIndexPath).row])
attributeString.addAttribute(NSStrikethroughStyleAttributeName, value: 2, range: NSMakeRange(0, attributeString.length))
cell.pPrice.attributedText = attributeString;
cell.price.textColor = UIColor(red: 214/255, green: 14/255, blue: 0/255, alpha: 1.0)
cell.layer.addBorderWatchlist(UIRectEdge.left, color: UIColor(red: 214/255, green: 14/255, blue: 0/255, alpha: 1.0), thickness: 6)
cell.savingAmount.text = globalVariable.savingAmount2[(indexPath as NSIndexPath).row]
} else if globalVariable.specialBool2[(indexPath as NSIndexPath).row] == false {
cell.pPrice.text = " "
cell.savingAmount.text = " "
cell.savingLbl.isHidden = true
cell.savingAmount.isHidden = true
}
}
cell.delegate = self
return cell
}
What do I have to change in the relevant portion of code to ensure that the contents reloads correctly each time the table is expanded?