Repair on gearbox taking 3 months

In the beginning of June I contacted Megatronics SA to get a quote on repairing my gearbox on my Audi S4 they sent me a quote of R59K to repair the gearbox has been with them for 3 months and excuses every Friday they already received a deposit of 32K and I have been patient for the last 3 months but this is really not a game anymore I'm getting fed up.........................