System only allows service suspension on billing date

I am going on leave and since I will not be using DSTV services for a month, I called in and asked that my service be suspended from 11 Dec 17 to 15 Jan18. In these trying financial times, this will save me for at least a month’s premium. The call centre advised me that this is not possible as my debit order date is the 01st of the month and DSTV systems do not cater for adhoc or pro-rata billing. I don't this it is fair that the common people suffer the consequences of DSTV's inefficiencies. If this matter is not resolved, I will terminate my contract with DSTV and start streaming.