Debit order incorrect

I joined virgin active at Northgate end of Nov where there was a 3mnths special of R220 then after 3mnth i was informed ill pay R450.00, the 01st debit order on 01st Dec was R294 I queried it but no answer - to make the matter worse my son of 10yrs joined but his membership was cancelled till it got fixed early Jan. Come 2nd Jan the debit order went thru was R450.00 I still queried it and till today I am told someone will let me know. How long does it take to solve and credit my account?