Further 68K damage after paying 55K

Now I will speak my heart out I contacted Megatronics SA Wynburg in April 2024 telling them that I have a Audi S4 wich came back from Mayfair Gearbox and that the gearbox is in pieces in my car they agreed that they can help by doing a complete overall on my gearbox and install it into my vehicle they sent me a qoute of 55K and committed to the qoute we gave them 3 months and being patient did not rush them after 3 months the vehicle was still not finished after 6 months of waiting we became frustrated as they still came up with excuses my boot was damaged up to today they still haven't explained how boot got damaged my battery was removed and they replaced it with a smaller battery my door window shield was removed and also not replaced 7 months later we demanded we want the vehicle back as it's unexeptable waiting 7 months for repairs my vehicle was given back to me with 1000km's driven by Megatronics SA Wynburg while vehicle was in their posecion we where then told that the vehicle is still in adaptive driving for 2 months we have been fooled by giving us the excuse that the vehicle is in adaptive driving. Megatronics SA Wynburg then told us they will come to us twice a week to do computer settings for the adaptive driving. For 2 weeks no one came out to do the settings when we asked when they are coming out to do the settings their excuse is that the technician is ill and not at work this also happened in the 7 months of waiting they forever use the excuse that the technician is ill or not at work we now took the vehicle to an MRI Audi approved dealer and got an additional qoute that there is 68K damage to the gearbox this after paying Megatronics SA Wynburg 55K for repairs. Megatronics SA Wynburg now uses the excuse that the gearbox came in pieces and that parts where missing but my argument is that they agreed on repairs knowing that the gearbox was in the car before they gave us the qoute and before giving us the quote my husband asked them to fully access the gearbox before giving us the qoute my opinion is Megatronics SA Wynburg just *****s people's money and then come up with all sorts of excuses and when vehicle is returned to customer still not repaired they request that they will refund but they will deduct the labour fees and the parts they replaced but have no proof of the parts they replaced and cannot show proof of the old parts they replaced but me as the customer has had the suffering of not having a vehicle for 7 months, a battery replaced with a smaller battery, boot damage, missing windshield, 1000kms added onto my vehicle and a further 68K damage to my vehicle and still no vehicle to drive they just use excuses and carry on bull****ting people for their money I'm not the only one complaining I know about 6 other customers with the same complain in just this year 2024 and nothing happens