Contract ended before time

I signed up for a PAY AS YOU GO (24 MONTHS). The T&C's was, on the 1st 12 months you pay a lump sum of R2340.00 which i payed. Then on the 2nd 12 months, i have an option to pay the lump sum of go an a debit order at R195.00. I actually signed an ADDENDUM for that. After 12 months i was told that my contract was only 12 months and has expired. Contacted customer services, spoke to a guy named Khahledi Tate. He said he will investigate reference PF***. Next thing i receive an email saying the matter was closed, without feedback. Called again, told me there was i mistake, they did not see the ADDENDUM, but they see it now and the contract needs to be re-activated. They will send a note to the administrators. I received the reference on the 9th of April 2015. Until today, no feedback. when i call they tell me they will check with the administrators and call me back. But they NEVER BOTHER TO CALL BACK. Question is, If i breached the contract, they would have even blacklisted me, but since its their fault, they a running around and solving such a simple thing. THINK TWICE PEOPLE ABOUT PLANET FITNESS. I call the PLANET ******S. filthy service, no truth.