Mcsure Warranty cant keep to quoted Price!

In Oct '14 i bought a pre-owned Audi from McCarthy Audi Umhlanga and inquired at the time about the extended warranty and the price given to me by the Durban branch was R8700+- This was Oct '14<br> On 22nd Jan15 my car was in for repairs and service and i requested a quote as freeway plan was now expiring and the price jumped from R8700+- to R 11 295-00. After inquiries regarding this i settled for the increased price.<br> On 28th Jan '15 i collected my car from Audi and submitted the application form and payment and 2 hours later i get an email from Audi that the price had increased (ONLY 6 DAYS LATER) to R12495-00. This email was not sent to me by McCarthy Mcsure themselves but they communicated this VIA the dealer and told the dealer to explain to me. What unprofessionalism. The reason for the amended prices as per McCarthy Mcsure...<br> \I was quoting the Customer before the 22/01/2015 this year