PATHETIC AFTER SALES SERVICE OFFERED TO CUSTOMERS

I purchased my vehicle during mid August I noted that most of my details were captured incorrectly, from my contact details to the salary pay date. I requested them to change the date during mid august such that it corresponds to that of my pay date. As usual my requests were falling onto deaf ears until the I followed up mid September regarding this issue. I was told they cant change the first instalment but problem would be resolved for October going forward. However, Mid October still my instalment has not run and when I request them to change it from month end to mid month, I am told that my instalment is going to increase due to interest and I will be charged twice for service fee. Those are not the terms I signed up for. I have even made payment for October so my account is not in arrears, I have paid in advance and the basis for increasing my instalment due to interest charges does not make any sense. Your service sucks and I regret purchasing my car from your dealership!!!