Purchases at DepositPhotos with cashback in Philippines

Twice I bought at DepositPhotos with the transition from Letyshops and twice had problems with calculating cashback: - 2018. There is a transition in the system, the purchase is completed, but the cashback was not credited automatically. After contacting the joint venture and checking it still enrolled. From the day of purchase to the accrual ~ 79 days passed (instead of 30) + the need to keep the issue on the pulse. - 2019. There is a transition, a purchase on the site is completed, but it is not marked in the Letyshops system and the cashback is not credited again. After contacting the joint venture and checking, Advertiser = DepositPhotos answered the Service = Letyshops that he transferred the Commission for my purchase to some other coupon service (name and reason are not reported). Therefore, I did not receive a cashback (there were no other discounts either). My communication on this issue with DepositPhotos came down to literary criticism and getting the same answers from them: "we are not involved in calculating cashback." To whom the commission of the Advertiser has gone - there is no answer ... The situation with the repeated neglect of cashback is an indicator of the operation of the system and systems, and therefore is inherent in them initially.