WORST CUSTOMER SERVICE EVER

Took car in for a service and some diagnostics for car lossing power while driving, they had my car for 4 weeks and told me the timing was out and qouted close to 10K for labour. Denied qoute and went to collect car only to find that they had destroyed my starter motor. Took vehicle to other mechanic to confirm timing issue only to find iut the problem was due to faulty relay, Relay has been replaced and car is working again perfectly(had to get new starter aswell) They dont reply to any emails, they screen your calls and customer care has not returned any of my calls or emails in 3 weeks. Worse customer service ive ever experienced and mechanics dont know what they doing, i apparently had the workshop manager try diagnose the problem who clearly couldnt ready the diagnostic logs.