Haval edenvale

I am very disappointed about Haval edenvale, I did a quote before I drop my car ,they said diagnose fee are R1100 , after I drop my car they told me that diagnose fee is R3300 how can that possible, Rose she said to me the problem is 3 hours labour's 😢, I phoned the manager and I said you overcharged me and he said he will find out and come back to me ,still now am waiting for his call