Billing Incorrect

I am an annual subscriber. I received a letter in February which stated that if I pay my yearly account before 31 March 2015, I will pay last years fees. I called customer care and verified this. I was then forwarded an account by the consultant, which I paid the next day (28 Feb, even though my account ends on 31 May, under the impression that I qualify for the discount as I received a letter addressed to me). On 1 May I upgraded to the DSTV Explorer and requested an account for the additional charge. All of a sudden I receive an account for the additional R80 a month plus the increase. When I emailed enquiries i was told that this was an offer to new customers only. WOW, then why was the letter addressed to me (customer for 16 years now) and furthermore there was no mention that this was offered to new customers only. On calling customer care to correct this I spent 40min (2 calls in total) on the phone and got nowhere except to be told to contact their legal department. This is TOTALLY unacceptable and a TOTAL RIPOFF. Customer Care apparently DO NOT CARE! Even better, I was told to move to a debit order system to ensure \CORRECT BILLING". """