Paid up letter

I have paid the outstanding amount in full. Now asking for the paid up letter and they blame wesbank. For having to take up to 21 working days And just keep transfer my call to some line with a full voice box. The most unorganised company I have see to date. I don't know how big companies use these people. no one informed me before hand how long the paid up letter will take and only after I paided they tell me can take up to 21 working days. I ask why. they blame wesbank I phone wesbank they tell me they waiting for payment from the lawyers I have been without a car for almost 2 month now because my insurance won't pay me without a paid up letter